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Daved H Fremont - One of the best experts on this subject based on the ideXlab platform.
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Structural Definition of the h 2kd peptide binding motif
Journal of Biological Chemistry, 2006Co-Authors: Vesselin Mitaksov, Daved H FremontAbstract:Classic major histocompatibility complex (MHC) proteins associate with antigen- and self-derived peptides in an allele-specific manner. Herein we present the crystal structure of the MHC class I protein H-2K(d) (K(d)) expressed by BALB/c mice in complex with an antigenic peptide derived from influenza A/PR/8/34 nucleoprotein (Flu, residues 147-155, TYQRTRALV). Analysis of our structure in conjunction with the sequences of naturally processed epitopes provides a comprehensive understanding of the dominant K(d) peptide-binding motif. We find that Flu residues Tyr(P2), Thr(P5), and Val(P9) are sequestered into the B, C, and F pockets of the K(d) groove, respectively. The shape and chemistry of the polymorphic B pocket make it an optimal binding site for the side chain of Tyr(P2) as the dominant anchoring residue of nonameric peptides. The non-polar F pocket limits the amino acid repertoire at P9 to hydrophobic residues such as Ile, Leu, or Val, whereas the C pocket restricts the size of the P5-anchoring side chain. We also show that Flu is accommodated in the complex through an unfavorable kink in the otherwise extended peptide backbone due to the presence of a prominent ridge in the K(d) groove. Surprisingly, this backbone conformation is strikingly similar to D(b)-presented peptides despite the fact that these proteins employ distinct motif-anchoring strategies. The results presented in this study provide a solid foundation for the understanding of K(d)-restricted antigen presentation and recognition events.
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Structural Definition of the F-actin–binding THATCH domain from HIP1R
Nature Structural & Molecular Biology, 2006Co-Authors: Tom J Brett, Peter S Mcpherson, Valerie Legendre-guillemin, Daved H FremontAbstract:Huntingtin-interacting protein-1 related (HIP1R) has a crucial protein-trafficking role, mediating associations between actin and clathrin-coated structures at the plasma membrane and trans-Golgi network. Here, we characterize the F-actin–binding region of HIP1R, termed the talin-HIP1/R/Sla2p actin-tethering C-terminal homology (THATCH) domain. The 1.9-Å crystal structure of the human HIP1R THATCH core reveals a large sequence-conserved surface patch created primarily by residues from the third and fourth helices of a unique five-helix bundle. Point mutations of seven contiguous patch residues produced significant decreases in F-actin binding. We also show that THATCH domains have a conserved C-terminal latch capable of oligomerizing the core, thereby modulating F-actin engagement. Collectively, these results establish a framework for investigating the links between endocytosis and actin dynamics mediated by THATCH domain–containing proteins.
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Structural Definition of the f actin binding thatch domain from hip1r
Nature Structural & Molecular Biology, 2006Co-Authors: Tom J Brett, Valerie Legendreguillemin, Peter S Mcpherson, Daved H FremontAbstract:Huntingtin-interacting protein-1 related (HIP1R) has a crucial protein-trafficking role, mediating associations between actin and clathrin-coated structures at the plasma membrane and trans-Golgi network. Here, we characterize the F-actin-binding region of HIP1R, termed the talin-HIP1/R/Sla2p actin-tethering C-terminal homology (THATCH) domain. The 1.9-A crystal structure of the human HIP1R THATCH core reveals a large sequence-conserved surface patch created primarily by residues from the third and fourth helices of a unique five-helix bundle. Point mutations of seven contiguous patch residues produced significant decreases in F-actin binding. We also show that THATCH domains have a conserved C-terminal latch capable of oligomerizing the core, thereby modulating F-actin engagement. Collectively, these results establish a framework for investigating the links between endocytosis and actin dynamics mediated by THATCH domain-containing proteins.
Allan H. White - One of the best experts on this subject based on the ideXlab platform.
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the Structural Definition of some novel adducts of stoichiometry cux dpex mecn 2 1 1 n x pseudo halogen dppx ph2e ch2 xeph2 e p as sb
Inorganica Chimica Acta, 2006Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, George A Koutsantonis, Allan H. WhiteAbstract:Abstract Single-crystal X-ray studies have defined the structures of a number of novel adducts of the form CuX:dpex (2:1), X = (pseudo-)halide, dpex = bis(diphenylpnicogeno)alkane, Ph 2 E(CH 2 ) x EPh 2 , E = P, As, of diverse types, solvated with acetonitrile. CuBr:dpem (2:1) 2 . 2MeCN (E = both P, As) are tetranuclear, derivative of the familiar ‘step’ structure, while CuCl:dpph (MeCN solvate) and CuBr:dppe (MeCN solvate) yield one-dimensional polymers (i.e., x = 1, 2, 6 for dpp x , x = m, e, h), as also does CuSCN:dpam (MeCN solvate). In CuI:dpsm:MeCN (3:1:2) (‘dpsm’ = Ph 2 Sb(CH 2 )SbPh 2 ), CuI:dpsm (2:1) 2 ‘step’ units are connected into an infinite ‘stair’ polymer by interspersed (MeCN)CuI linkers.
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Structural characterization of 1 1 adducts of silver i pseudo halides agx x nco cl br i with ph2e ch2 eph2 e p as dp p a m and 4 3 adducts of copper i halide cux x cl br i containing trinuclear cations of the form x2ag3 dppm 3 x and x2cu3 dppm 3 cux2
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, Fauziatul Fazaroh, Allan H. WhiteAbstract:Abstract The extension of systematic Structural Definition of arrays of the form MX:EPh3 (1:n) (M = univalent coinage metal, X = (pseudo-)halide, E = P, As, Sb, n = integer (1–4)) into complexes of chelate congeners with ligands of the form ‘dpex’ (Ph2E(CH2)xEPh2):MX:dpex (1:n) is commenced. Syntheses, spectroscopic features and single crystal X-ray Structural characterizations are reported for 1:1 adducts of bis(diphenylphosphine)methane (‘dppm’) with silver(I) (pseudo-)halides, AgX (X = Cl, Br, I, NCO), and for their arsenic (‘dpam’) Cl, NCO counterparts AgX:dpam (1:1), also for an array of 4:3 adducts of copper(I) halides (CuX, X = Cl, Br, I) with dppm. All species recorded here (the novel molecular [(OCN)3Ag3(dpam)3] excepted) contain trinuclear cations, as [X2A3g(dpem)3]X(· nS) and [X2Cu3(dppm)3](CuX2)(· nS), enabling systematic comparison between a wide diversity of species.
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the Structural Definition of adducts of stoichiometry agx dppf 1 1 n x simple anion dppf bis diphenylphosphino ferrocene
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, Allan H. WhiteAbstract:Abstract Single crystal X-ray Structural characterizations are recorded for an array of adducts of the form AgX:dppf (1:1)(n), X = simple (pseudo-)halide or oxy-anion, ‘dppf’ = bis(diphenyl phosphino)ferrocene, for adducts X = Cl (new phase), Br, I, SCN, OCN, CN, NO3 (new phase), O2CCH3, n = 2, the form being dimeric [(dppf-P,P′)Ag(μ-X)2Ag(P,P′-dppf)], for X = I, SCN, [Ag(μ-X)2(P-dppf-P′)2Ag′]; for X = O2CCF3, n = ∞, the form is an extended polymer: ⋯Ag(O · CO · CF3)(P-dppf-P′)Ag′(O⋯. A dichloromethane solvate phase of CuI:dppf (1:1)2 (also centrosymmetric) is also recorded. Synthetic procedures for all adducts have been reported. All compounds have been characterized both in solution (1H, 13C, 31P NMR, ESI MS) and in the solid state (IR). The topology of the structures in the solid state was found to depend on the nature of the counterion.
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the Structural Definition of adducts of stoichiometry mx dpex 2 3 m cui agi x simple anion dpex ph2e ch2 xeph2 e p as
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Adriano Pizzabiocca, Neil Somers, Claudio Pettinari, Brian W. Skelton, Allan H. WhiteAbstract:Single crystal X-ray Structural characterizations are recorded for a number of adducts of MX:dpex (2:3) stoichiometry (MX = simple univalent copper or silver salt; dpex = Ph2E(CH2)xEPh2 (E = P, As)). CuX:dppe (2:3) (X = Cl, Br, I, CN) are binuclear [(dppe-P,P′)CuX(P-dppe-P′)CuX(P,P′-dppe)], all centrosymmetric. AgX:dpex (2:3) (dpex = ‘dpae’ (Ph2As(CH2)2AsPh2), X = Br, F3CCO2 (= ‘tfa’), F3CSO3 (≡ ‘tfs’); dpex = ‘dpape’ (Ph2As(CH2)2PPh2), X = CN, SCN, OClO3) are one-dimensional polymers ⋯–E′)1AgX(E-dpex-E′)2-AgX(E-dpex-E′)1AgX⋯, P, As sites scrambled in the latter. AgNO3:dpam (2:3) is also a one-dimensional polymer, ⋯AgO·NO·OAg(As-dpam-As)AgO·NO·OAg⋯ (‘dpam’ ≡ Ph2As(CH2)2AsPh2). AgX:dpae (2:3) (X = I, CN, ClO4, NO3) and AgX:dpape (2:3) (X = Br, I, NO3) are two-dimensional polymers with large 30-membered macrocyclic rings; similar webs are found for dppx ligands in AgOH:dppb (2:3) and AgNCO, Agtfa:dpph (2:3) with 42- and 54-membered rings. Complexes AgX:dpape (1:3) (X = Cl, Br) are defined as mono-nuclear [XAg(Ph2P(CH2)2AsPh2)3] arrays, the unidentate ligands predominantly P-bound. Synthetic procedures for the adducts are reported, selected compounds being characterized both in solution (1H, 31P NMR, ESI MS) and in the solid state (IR).
Corrado Di Nicola - One of the best experts on this subject based on the ideXlab platform.
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the Structural Definition of some novel adducts of stoichiometry cux dpex mecn 2 1 1 n x pseudo halogen dppx ph2e ch2 xeph2 e p as sb
Inorganica Chimica Acta, 2006Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, George A Koutsantonis, Allan H. WhiteAbstract:Abstract Single-crystal X-ray studies have defined the structures of a number of novel adducts of the form CuX:dpex (2:1), X = (pseudo-)halide, dpex = bis(diphenylpnicogeno)alkane, Ph 2 E(CH 2 ) x EPh 2 , E = P, As, of diverse types, solvated with acetonitrile. CuBr:dpem (2:1) 2 . 2MeCN (E = both P, As) are tetranuclear, derivative of the familiar ‘step’ structure, while CuCl:dpph (MeCN solvate) and CuBr:dppe (MeCN solvate) yield one-dimensional polymers (i.e., x = 1, 2, 6 for dpp x , x = m, e, h), as also does CuSCN:dpam (MeCN solvate). In CuI:dpsm:MeCN (3:1:2) (‘dpsm’ = Ph 2 Sb(CH 2 )SbPh 2 ), CuI:dpsm (2:1) 2 ‘step’ units are connected into an infinite ‘stair’ polymer by interspersed (MeCN)CuI linkers.
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Structural characterization of 1 1 adducts of silver i pseudo halides agx x nco cl br i with ph2e ch2 eph2 e p as dp p a m and 4 3 adducts of copper i halide cux x cl br i containing trinuclear cations of the form x2ag3 dppm 3 x and x2cu3 dppm 3 cux2
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, Fauziatul Fazaroh, Allan H. WhiteAbstract:Abstract The extension of systematic Structural Definition of arrays of the form MX:EPh3 (1:n) (M = univalent coinage metal, X = (pseudo-)halide, E = P, As, Sb, n = integer (1–4)) into complexes of chelate congeners with ligands of the form ‘dpex’ (Ph2E(CH2)xEPh2):MX:dpex (1:n) is commenced. Syntheses, spectroscopic features and single crystal X-ray Structural characterizations are reported for 1:1 adducts of bis(diphenylphosphine)methane (‘dppm’) with silver(I) (pseudo-)halides, AgX (X = Cl, Br, I, NCO), and for their arsenic (‘dpam’) Cl, NCO counterparts AgX:dpam (1:1), also for an array of 4:3 adducts of copper(I) halides (CuX, X = Cl, Br, I) with dppm. All species recorded here (the novel molecular [(OCN)3Ag3(dpam)3] excepted) contain trinuclear cations, as [X2A3g(dpem)3]X(· nS) and [X2Cu3(dppm)3](CuX2)(· nS), enabling systematic comparison between a wide diversity of species.
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the Structural Definition of adducts of stoichiometry agx dppf 1 1 n x simple anion dppf bis diphenylphosphino ferrocene
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, Allan H. WhiteAbstract:Abstract Single crystal X-ray Structural characterizations are recorded for an array of adducts of the form AgX:dppf (1:1)(n), X = simple (pseudo-)halide or oxy-anion, ‘dppf’ = bis(diphenyl phosphino)ferrocene, for adducts X = Cl (new phase), Br, I, SCN, OCN, CN, NO3 (new phase), O2CCH3, n = 2, the form being dimeric [(dppf-P,P′)Ag(μ-X)2Ag(P,P′-dppf)], for X = I, SCN, [Ag(μ-X)2(P-dppf-P′)2Ag′]; for X = O2CCF3, n = ∞, the form is an extended polymer: ⋯Ag(O · CO · CF3)(P-dppf-P′)Ag′(O⋯. A dichloromethane solvate phase of CuI:dppf (1:1)2 (also centrosymmetric) is also recorded. Synthetic procedures for all adducts have been reported. All compounds have been characterized both in solution (1H, 13C, 31P NMR, ESI MS) and in the solid state (IR). The topology of the structures in the solid state was found to depend on the nature of the counterion.
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the Structural Definition of adducts of stoichiometry mx dpex 2 3 m cui agi x simple anion dpex ph2e ch2 xeph2 e p as
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Adriano Pizzabiocca, Neil Somers, Claudio Pettinari, Brian W. Skelton, Allan H. WhiteAbstract:Single crystal X-ray Structural characterizations are recorded for a number of adducts of MX:dpex (2:3) stoichiometry (MX = simple univalent copper or silver salt; dpex = Ph2E(CH2)xEPh2 (E = P, As)). CuX:dppe (2:3) (X = Cl, Br, I, CN) are binuclear [(dppe-P,P′)CuX(P-dppe-P′)CuX(P,P′-dppe)], all centrosymmetric. AgX:dpex (2:3) (dpex = ‘dpae’ (Ph2As(CH2)2AsPh2), X = Br, F3CCO2 (= ‘tfa’), F3CSO3 (≡ ‘tfs’); dpex = ‘dpape’ (Ph2As(CH2)2PPh2), X = CN, SCN, OClO3) are one-dimensional polymers ⋯–E′)1AgX(E-dpex-E′)2-AgX(E-dpex-E′)1AgX⋯, P, As sites scrambled in the latter. AgNO3:dpam (2:3) is also a one-dimensional polymer, ⋯AgO·NO·OAg(As-dpam-As)AgO·NO·OAg⋯ (‘dpam’ ≡ Ph2As(CH2)2AsPh2). AgX:dpae (2:3) (X = I, CN, ClO4, NO3) and AgX:dpape (2:3) (X = Br, I, NO3) are two-dimensional polymers with large 30-membered macrocyclic rings; similar webs are found for dppx ligands in AgOH:dppb (2:3) and AgNCO, Agtfa:dpph (2:3) with 42- and 54-membered rings. Complexes AgX:dpape (1:3) (X = Cl, Br) are defined as mono-nuclear [XAg(Ph2P(CH2)2AsPh2)3] arrays, the unidentate ligands predominantly P-bound. Synthetic procedures for the adducts are reported, selected compounds being characterized both in solution (1H, 31P NMR, ESI MS) and in the solid state (IR).
Tom J Brett - One of the best experts on this subject based on the ideXlab platform.
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Structural Definition of the F-actin–binding THATCH domain from HIP1R
Nature Structural & Molecular Biology, 2006Co-Authors: Tom J Brett, Peter S Mcpherson, Valerie Legendre-guillemin, Daved H FremontAbstract:Huntingtin-interacting protein-1 related (HIP1R) has a crucial protein-trafficking role, mediating associations between actin and clathrin-coated structures at the plasma membrane and trans-Golgi network. Here, we characterize the F-actin–binding region of HIP1R, termed the talin-HIP1/R/Sla2p actin-tethering C-terminal homology (THATCH) domain. The 1.9-Å crystal structure of the human HIP1R THATCH core reveals a large sequence-conserved surface patch created primarily by residues from the third and fourth helices of a unique five-helix bundle. Point mutations of seven contiguous patch residues produced significant decreases in F-actin binding. We also show that THATCH domains have a conserved C-terminal latch capable of oligomerizing the core, thereby modulating F-actin engagement. Collectively, these results establish a framework for investigating the links between endocytosis and actin dynamics mediated by THATCH domain–containing proteins.
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Structural Definition of the f actin binding thatch domain from hip1r
Nature Structural & Molecular Biology, 2006Co-Authors: Tom J Brett, Valerie Legendreguillemin, Peter S Mcpherson, Daved H FremontAbstract:Huntingtin-interacting protein-1 related (HIP1R) has a crucial protein-trafficking role, mediating associations between actin and clathrin-coated structures at the plasma membrane and trans-Golgi network. Here, we characterize the F-actin-binding region of HIP1R, termed the talin-HIP1/R/Sla2p actin-tethering C-terminal homology (THATCH) domain. The 1.9-A crystal structure of the human HIP1R THATCH core reveals a large sequence-conserved surface patch created primarily by residues from the third and fourth helices of a unique five-helix bundle. Point mutations of seven contiguous patch residues produced significant decreases in F-actin binding. We also show that THATCH domains have a conserved C-terminal latch capable of oligomerizing the core, thereby modulating F-actin engagement. Collectively, these results establish a framework for investigating the links between endocytosis and actin dynamics mediated by THATCH domain-containing proteins.
Claudio Pettinari - One of the best experts on this subject based on the ideXlab platform.
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the Structural Definition of some novel adducts of stoichiometry cux dpex mecn 2 1 1 n x pseudo halogen dppx ph2e ch2 xeph2 e p as sb
Inorganica Chimica Acta, 2006Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, George A Koutsantonis, Allan H. WhiteAbstract:Abstract Single-crystal X-ray studies have defined the structures of a number of novel adducts of the form CuX:dpex (2:1), X = (pseudo-)halide, dpex = bis(diphenylpnicogeno)alkane, Ph 2 E(CH 2 ) x EPh 2 , E = P, As, of diverse types, solvated with acetonitrile. CuBr:dpem (2:1) 2 . 2MeCN (E = both P, As) are tetranuclear, derivative of the familiar ‘step’ structure, while CuCl:dpph (MeCN solvate) and CuBr:dppe (MeCN solvate) yield one-dimensional polymers (i.e., x = 1, 2, 6 for dpp x , x = m, e, h), as also does CuSCN:dpam (MeCN solvate). In CuI:dpsm:MeCN (3:1:2) (‘dpsm’ = Ph 2 Sb(CH 2 )SbPh 2 ), CuI:dpsm (2:1) 2 ‘step’ units are connected into an infinite ‘stair’ polymer by interspersed (MeCN)CuI linkers.
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Structural characterization of 1 1 adducts of silver i pseudo halides agx x nco cl br i with ph2e ch2 eph2 e p as dp p a m and 4 3 adducts of copper i halide cux x cl br i containing trinuclear cations of the form x2ag3 dppm 3 x and x2cu3 dppm 3 cux2
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, Fauziatul Fazaroh, Allan H. WhiteAbstract:Abstract The extension of systematic Structural Definition of arrays of the form MX:EPh3 (1:n) (M = univalent coinage metal, X = (pseudo-)halide, E = P, As, Sb, n = integer (1–4)) into complexes of chelate congeners with ligands of the form ‘dpex’ (Ph2E(CH2)xEPh2):MX:dpex (1:n) is commenced. Syntheses, spectroscopic features and single crystal X-ray Structural characterizations are reported for 1:1 adducts of bis(diphenylphosphine)methane (‘dppm’) with silver(I) (pseudo-)halides, AgX (X = Cl, Br, I, NCO), and for their arsenic (‘dpam’) Cl, NCO counterparts AgX:dpam (1:1), also for an array of 4:3 adducts of copper(I) halides (CuX, X = Cl, Br, I) with dppm. All species recorded here (the novel molecular [(OCN)3Ag3(dpam)3] excepted) contain trinuclear cations, as [X2A3g(dpem)3]X(· nS) and [X2Cu3(dppm)3](CuX2)(· nS), enabling systematic comparison between a wide diversity of species.
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the Structural Definition of adducts of stoichiometry agx dppf 1 1 n x simple anion dppf bis diphenylphosphino ferrocene
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Neil Somers, Claudio Pettinari, Brian W. Skelton, Allan H. WhiteAbstract:Abstract Single crystal X-ray Structural characterizations are recorded for an array of adducts of the form AgX:dppf (1:1)(n), X = simple (pseudo-)halide or oxy-anion, ‘dppf’ = bis(diphenyl phosphino)ferrocene, for adducts X = Cl (new phase), Br, I, SCN, OCN, CN, NO3 (new phase), O2CCH3, n = 2, the form being dimeric [(dppf-P,P′)Ag(μ-X)2Ag(P,P′-dppf)], for X = I, SCN, [Ag(μ-X)2(P-dppf-P′)2Ag′]; for X = O2CCF3, n = ∞, the form is an extended polymer: ⋯Ag(O · CO · CF3)(P-dppf-P′)Ag′(O⋯. A dichloromethane solvate phase of CuI:dppf (1:1)2 (also centrosymmetric) is also recorded. Synthetic procedures for all adducts have been reported. All compounds have been characterized both in solution (1H, 13C, 31P NMR, ESI MS) and in the solid state (IR). The topology of the structures in the solid state was found to depend on the nature of the counterion.
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the Structural Definition of adducts of stoichiometry mx dpex 2 3 m cui agi x simple anion dpex ph2e ch2 xeph2 e p as
Inorganica Chimica Acta, 2005Co-Authors: Corrado Di Nicola, Adriano Pizzabiocca, Neil Somers, Claudio Pettinari, Brian W. Skelton, Allan H. WhiteAbstract:Single crystal X-ray Structural characterizations are recorded for a number of adducts of MX:dpex (2:3) stoichiometry (MX = simple univalent copper or silver salt; dpex = Ph2E(CH2)xEPh2 (E = P, As)). CuX:dppe (2:3) (X = Cl, Br, I, CN) are binuclear [(dppe-P,P′)CuX(P-dppe-P′)CuX(P,P′-dppe)], all centrosymmetric. AgX:dpex (2:3) (dpex = ‘dpae’ (Ph2As(CH2)2AsPh2), X = Br, F3CCO2 (= ‘tfa’), F3CSO3 (≡ ‘tfs’); dpex = ‘dpape’ (Ph2As(CH2)2PPh2), X = CN, SCN, OClO3) are one-dimensional polymers ⋯–E′)1AgX(E-dpex-E′)2-AgX(E-dpex-E′)1AgX⋯, P, As sites scrambled in the latter. AgNO3:dpam (2:3) is also a one-dimensional polymer, ⋯AgO·NO·OAg(As-dpam-As)AgO·NO·OAg⋯ (‘dpam’ ≡ Ph2As(CH2)2AsPh2). AgX:dpae (2:3) (X = I, CN, ClO4, NO3) and AgX:dpape (2:3) (X = Br, I, NO3) are two-dimensional polymers with large 30-membered macrocyclic rings; similar webs are found for dppx ligands in AgOH:dppb (2:3) and AgNCO, Agtfa:dpph (2:3) with 42- and 54-membered rings. Complexes AgX:dpape (1:3) (X = Cl, Br) are defined as mono-nuclear [XAg(Ph2P(CH2)2AsPh2)3] arrays, the unidentate ligands predominantly P-bound. Synthetic procedures for the adducts are reported, selected compounds being characterized both in solution (1H, 31P NMR, ESI MS) and in the solid state (IR).
