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Peter Moore - One of the best experts on this subject based on the ideXlab platform.
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A General Synthetic Route to Fully N‐Alkylated Azamacrocycles, and an Uncommon Geometry for a Six‐Coordinate Nickel(II) Complex of 1,4,8,11‐ Tetrapropyl‐1,4,8,11‐tetraazacyclotetradecane (L1). Crystal Structure of trans‐(R,S,R,S)‐(Ni(L1)(NCS)2).
ChemInform, 2010Co-Authors: Nathaniel W. Alcock, Andrew C. Benniston, Simon J. Grant, H. A. A. Omar, Peter MooreAbstract:A two-step route to a range of fully N-alkylated Azamacrocycles has been developed; the crystal structure of trans-[Ni(L1)(NCS)2](L1= 1,4,8,11-tetrapropyl-1,4,8,11-tetraazacyclotetradecane) shows the nickel(II) to be six-coordinate, but with the uncommon (R,S,R,S)-or trans-(I)-set of N-configurations.
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Synthesis of the terpyridyl pendant-arm Azamacrocycle 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) and complexes of L with copper(II) and nickel(II). Crystal structure of [Cu(HL)(H2O)2][PF6]3
Journal of the Chemical Society Dalton Transactions, 2000Co-Authors: Mary L. Turonek, Peter Moore, William ErringtonAbstract:The azamacrocyclic ligand 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) has been prepared, and some of the complexes it forms with hydrated copper(II) and nickel(II) have been isolated as the [PF6]− salts. X-Ray crystallography has been used to determine the solid state structure of the distorted trigonal bipyramidal complex [Cu(HL)(H2O)2][PF6]3, in which the copper(II) is co-ordinated to the terpyridyl group and the Azamacrocycle is monoprotonated and non-co-ordinating. A bis(2,2′∶6′,2′′-terpyridine)nickel(II) complex, [Ni(H2L2)2][PF6]6 has also been isolated, in which each Azamacrocycle is diprotonated.
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synthesis of the terpyridyl pendant arm Azamacrocycle 4 p 1 4 7 triazacyclonon 1 ylmethylphenyl 2 2 6 2 terpyridine l and complexes of l with copper ii and nickel ii crystal structure of cu hl h2o 2 pf6 3
Journal of The Chemical Society-dalton Transactions, 2000Co-Authors: Mary L. Turonek, Peter Moore, William ErringtonAbstract:The azamacrocyclic ligand 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) has been prepared, and some of the complexes it forms with hydrated copper(II) and nickel(II) have been isolated as the [PF6]− salts. X-Ray crystallography has been used to determine the solid state structure of the distorted trigonal bipyramidal complex [Cu(HL)(H2O)2][PF6]3, in which the copper(II) is co-ordinated to the terpyridyl group and the Azamacrocycle is monoprotonated and non-co-ordinating. A bis(2,2′∶6′,2′′-terpyridine)nickel(II) complex, [Ni(H2L2)2][PF6]6 has also been isolated, in which each Azamacrocycle is diprotonated.
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Pyridyl-, bipyridyl-, and terpyridyl-functionalised Azamacrocycles
Supramolecular Chemistry, 1996Co-Authors: Nathaniel W. Alcock, Peter Moore, William Errington, Adam J. Clarke, Ana Maria Josceanu, Simon C. Rawle, Philippa Sheldon, Stephen M. Smith, Mary L. TuronekAbstract:Abstract A series of Azamacrocycles which have been N-functionalised with pendent pyridylmethyl-(pyCH2-), bipyridylmethyl-(bipyCH2-) and terpyridylmethyl- (terpyCH2-) arms have been synthesised and characterised, and some of their coordination chemistry with transition metal ions is reported. By attaching the pendent-arms at the 5- rather than the 6-position of the py, bipy and terpy, new ligands are generated which can be used to form polynuclear metal complexes in a controlled and systematic fashion. Fluorescent pH and transition metal ion sensors have been developed by reacting the azamacrocyclic N-pendent bipyCH2 arm(s) with cis-[Ru(bipy)2Cl2], to give macrocycles with up to four attached [Ru(bipy)3]2+ groups. That based on 1,4,7-triazacyclononane (9N3), with three attached [Ru(bipy)3]2+ groups, has a first photo excited state pKa of 7.1, and is a useful fluorescent sensor for physiological pH at below micromolar concentrations. The analogous derivative of cyclam (1,4,8,11-tetraazacyclotetradecane) ca...
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A general synthetic route to fully N-alkylated Azamacrocycles, and an uncommon geometry for a six-coordinate nickel(II) complex of 1,4,8,11-tetrapropyl-1,4,8,11-tetraazacyclotetradecane (L1). Crystal structure of trans-(R,S,R,S)-[Ni(L1)(NCS)2]
Journal of the Chemical Society Chemical Communications, 1991Co-Authors: Nathaniel W. Alcock, Andrew C. Benniston, Simon J. Grant, H. A. A. Omar, Peter MooreAbstract:A two-step route to a range of fully N-alkylated Azamacrocycles has been developed; the crystal structure of trans-[Ni(L1)(NCS)2](L1= 1,4,8,11-tetrapropyl-1,4,8,11-tetraazacyclotetradecane) shows the nickel(II) to be six-coordinate, but with the uncommon (R,S,R,S)-or trans-(I)-set of N-configurations.
Mary L. Turonek - One of the best experts on this subject based on the ideXlab platform.
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Synthesis of the terpyridyl pendant-arm Azamacrocycle 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) and complexes of L with copper(II) and nickel(II). Crystal structure of [Cu(HL)(H2O)2][PF6]3
Journal of the Chemical Society Dalton Transactions, 2000Co-Authors: Mary L. Turonek, Peter Moore, William ErringtonAbstract:The azamacrocyclic ligand 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) has been prepared, and some of the complexes it forms with hydrated copper(II) and nickel(II) have been isolated as the [PF6]− salts. X-Ray crystallography has been used to determine the solid state structure of the distorted trigonal bipyramidal complex [Cu(HL)(H2O)2][PF6]3, in which the copper(II) is co-ordinated to the terpyridyl group and the Azamacrocycle is monoprotonated and non-co-ordinating. A bis(2,2′∶6′,2′′-terpyridine)nickel(II) complex, [Ni(H2L2)2][PF6]6 has also been isolated, in which each Azamacrocycle is diprotonated.
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synthesis of the terpyridyl pendant arm Azamacrocycle 4 p 1 4 7 triazacyclonon 1 ylmethylphenyl 2 2 6 2 terpyridine l and complexes of l with copper ii and nickel ii crystal structure of cu hl h2o 2 pf6 3
Journal of The Chemical Society-dalton Transactions, 2000Co-Authors: Mary L. Turonek, Peter Moore, William ErringtonAbstract:The azamacrocyclic ligand 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) has been prepared, and some of the complexes it forms with hydrated copper(II) and nickel(II) have been isolated as the [PF6]− salts. X-Ray crystallography has been used to determine the solid state structure of the distorted trigonal bipyramidal complex [Cu(HL)(H2O)2][PF6]3, in which the copper(II) is co-ordinated to the terpyridyl group and the Azamacrocycle is monoprotonated and non-co-ordinating. A bis(2,2′∶6′,2′′-terpyridine)nickel(II) complex, [Ni(H2L2)2][PF6]6 has also been isolated, in which each Azamacrocycle is diprotonated.
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Pyridyl-, bipyridyl-, and terpyridyl-functionalised Azamacrocycles
Supramolecular Chemistry, 1996Co-Authors: Nathaniel W. Alcock, Peter Moore, William Errington, Adam J. Clarke, Ana Maria Josceanu, Simon C. Rawle, Philippa Sheldon, Stephen M. Smith, Mary L. TuronekAbstract:Abstract A series of Azamacrocycles which have been N-functionalised with pendent pyridylmethyl-(pyCH2-), bipyridylmethyl-(bipyCH2-) and terpyridylmethyl- (terpyCH2-) arms have been synthesised and characterised, and some of their coordination chemistry with transition metal ions is reported. By attaching the pendent-arms at the 5- rather than the 6-position of the py, bipy and terpy, new ligands are generated which can be used to form polynuclear metal complexes in a controlled and systematic fashion. Fluorescent pH and transition metal ion sensors have been developed by reacting the azamacrocyclic N-pendent bipyCH2 arm(s) with cis-[Ru(bipy)2Cl2], to give macrocycles with up to four attached [Ru(bipy)3]2+ groups. That based on 1,4,7-triazacyclononane (9N3), with three attached [Ru(bipy)3]2+ groups, has a first photo excited state pKa of 7.1, and is a useful fluorescent sensor for physiological pH at below micromolar concentrations. The analogous derivative of cyclam (1,4,8,11-tetraazacyclotetradecane) ca...
William Errington - One of the best experts on this subject based on the ideXlab platform.
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Synthesis of the terpyridyl pendant-arm Azamacrocycle 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) and complexes of L with copper(II) and nickel(II). Crystal structure of [Cu(HL)(H2O)2][PF6]3
Journal of the Chemical Society Dalton Transactions, 2000Co-Authors: Mary L. Turonek, Peter Moore, William ErringtonAbstract:The azamacrocyclic ligand 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) has been prepared, and some of the complexes it forms with hydrated copper(II) and nickel(II) have been isolated as the [PF6]− salts. X-Ray crystallography has been used to determine the solid state structure of the distorted trigonal bipyramidal complex [Cu(HL)(H2O)2][PF6]3, in which the copper(II) is co-ordinated to the terpyridyl group and the Azamacrocycle is monoprotonated and non-co-ordinating. A bis(2,2′∶6′,2′′-terpyridine)nickel(II) complex, [Ni(H2L2)2][PF6]6 has also been isolated, in which each Azamacrocycle is diprotonated.
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synthesis of the terpyridyl pendant arm Azamacrocycle 4 p 1 4 7 triazacyclonon 1 ylmethylphenyl 2 2 6 2 terpyridine l and complexes of l with copper ii and nickel ii crystal structure of cu hl h2o 2 pf6 3
Journal of The Chemical Society-dalton Transactions, 2000Co-Authors: Mary L. Turonek, Peter Moore, William ErringtonAbstract:The azamacrocyclic ligand 4′-(p-1,4,7-triazacyclonon-1-ylmethylphenyl)-2,2′∶6′,2′′-terpyridine (L) has been prepared, and some of the complexes it forms with hydrated copper(II) and nickel(II) have been isolated as the [PF6]− salts. X-Ray crystallography has been used to determine the solid state structure of the distorted trigonal bipyramidal complex [Cu(HL)(H2O)2][PF6]3, in which the copper(II) is co-ordinated to the terpyridyl group and the Azamacrocycle is monoprotonated and non-co-ordinating. A bis(2,2′∶6′,2′′-terpyridine)nickel(II) complex, [Ni(H2L2)2][PF6]6 has also been isolated, in which each Azamacrocycle is diprotonated.
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Pyridyl-, bipyridyl-, and terpyridyl-functionalised Azamacrocycles
Supramolecular Chemistry, 1996Co-Authors: Nathaniel W. Alcock, Peter Moore, William Errington, Adam J. Clarke, Ana Maria Josceanu, Simon C. Rawle, Philippa Sheldon, Stephen M. Smith, Mary L. TuronekAbstract:Abstract A series of Azamacrocycles which have been N-functionalised with pendent pyridylmethyl-(pyCH2-), bipyridylmethyl-(bipyCH2-) and terpyridylmethyl- (terpyCH2-) arms have been synthesised and characterised, and some of their coordination chemistry with transition metal ions is reported. By attaching the pendent-arms at the 5- rather than the 6-position of the py, bipy and terpy, new ligands are generated which can be used to form polynuclear metal complexes in a controlled and systematic fashion. Fluorescent pH and transition metal ion sensors have been developed by reacting the azamacrocyclic N-pendent bipyCH2 arm(s) with cis-[Ru(bipy)2Cl2], to give macrocycles with up to four attached [Ru(bipy)3]2+ groups. That based on 1,4,7-triazacyclononane (9N3), with three attached [Ru(bipy)3]2+ groups, has a first photo excited state pKa of 7.1, and is a useful fluorescent sensor for physiological pH at below micromolar concentrations. The analogous derivative of cyclam (1,4,8,11-tetraazacyclotetradecane) ca...
Nathaniel W. Alcock - One of the best experts on this subject based on the ideXlab platform.
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A General Synthetic Route to Fully N‐Alkylated Azamacrocycles, and an Uncommon Geometry for a Six‐Coordinate Nickel(II) Complex of 1,4,8,11‐ Tetrapropyl‐1,4,8,11‐tetraazacyclotetradecane (L1). Crystal Structure of trans‐(R,S,R,S)‐(Ni(L1)(NCS)2).
ChemInform, 2010Co-Authors: Nathaniel W. Alcock, Andrew C. Benniston, Simon J. Grant, H. A. A. Omar, Peter MooreAbstract:A two-step route to a range of fully N-alkylated Azamacrocycles has been developed; the crystal structure of trans-[Ni(L1)(NCS)2](L1= 1,4,8,11-tetrapropyl-1,4,8,11-tetraazacyclotetradecane) shows the nickel(II) to be six-coordinate, but with the uncommon (R,S,R,S)-or trans-(I)-set of N-configurations.
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Pyridyl-, bipyridyl-, and terpyridyl-functionalised Azamacrocycles
Supramolecular Chemistry, 1996Co-Authors: Nathaniel W. Alcock, Peter Moore, William Errington, Adam J. Clarke, Ana Maria Josceanu, Simon C. Rawle, Philippa Sheldon, Stephen M. Smith, Mary L. TuronekAbstract:Abstract A series of Azamacrocycles which have been N-functionalised with pendent pyridylmethyl-(pyCH2-), bipyridylmethyl-(bipyCH2-) and terpyridylmethyl- (terpyCH2-) arms have been synthesised and characterised, and some of their coordination chemistry with transition metal ions is reported. By attaching the pendent-arms at the 5- rather than the 6-position of the py, bipy and terpy, new ligands are generated which can be used to form polynuclear metal complexes in a controlled and systematic fashion. Fluorescent pH and transition metal ion sensors have been developed by reacting the azamacrocyclic N-pendent bipyCH2 arm(s) with cis-[Ru(bipy)2Cl2], to give macrocycles with up to four attached [Ru(bipy)3]2+ groups. That based on 1,4,7-triazacyclononane (9N3), with three attached [Ru(bipy)3]2+ groups, has a first photo excited state pKa of 7.1, and is a useful fluorescent sensor for physiological pH at below micromolar concentrations. The analogous derivative of cyclam (1,4,8,11-tetraazacyclotetradecane) ca...
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A general synthetic route to fully N-alkylated Azamacrocycles, and an uncommon geometry for a six-coordinate nickel(II) complex of 1,4,8,11-tetrapropyl-1,4,8,11-tetraazacyclotetradecane (L1). Crystal structure of trans-(R,S,R,S)-[Ni(L1)(NCS)2]
Journal of the Chemical Society Chemical Communications, 1991Co-Authors: Nathaniel W. Alcock, Andrew C. Benniston, Simon J. Grant, H. A. A. Omar, Peter MooreAbstract:A two-step route to a range of fully N-alkylated Azamacrocycles has been developed; the crystal structure of trans-[Ni(L1)(NCS)2](L1= 1,4,8,11-tetrapropyl-1,4,8,11-tetraazacyclotetradecane) shows the nickel(II) to be six-coordinate, but with the uncommon (R,S,R,S)-or trans-(I)-set of N-configurations.
Enrique García-españa - One of the best experts on this subject based on the ideXlab platform.
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Construction of green nanostructured heterogeneous catalysts via non-covalent surface decoration of multi-walled carbon nanotubes with Pd(II) complexes of Azamacrocycles
Journal of Catalysis, 2017Co-Authors: Matteo Savastano, Antonio Bianchi, Enrique García-españa, Paloma Arranz-mascarós, Carla Bazzicalupi, Maria Paz Clares, M.l. Godino-salido, M.d. Gutierrez-valero, Mario Inclán, Rafael López-garzónAbstract:Abstract Green nanostructured heterogeneous catalysts were prepared via a bottom-up strategy. Designed ligands were synthesized joining covalently an electrondeficient pyrimidine residue and a scorpiand Azamacrocycle. The desired molecular properties were easily transferred to nanostructured materials in two steps: first, exploiting their spontaneous chemisorption onto multi-walled carbon nanotubes (MWCNTs) via the pyrimidinic moiety in water at room temperature, then, taking advantage of the easy coordination of Pd(II) to the Azamacrocycle in the same conditions. An evenly distribution of catalytic centres was obtained on the MWCNTs surface. Catalytic properties of these materials were assessed toward the Cu-free Sonogashira cross-coupling, leading to significant improvements in terms of yields and reaction conditions, especially when considering the possibility to maintain yields of 90%, or above, in a feasible amount of time (2 h), while working under green conditions (water, 50 °C, aerobic atmosphere). The catalysts proved to be reusable for several cycles with good yields.
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Intermolecular Binding Modes in a Novel [1 + 1] Condensation 1H-Pyrazole Azamacrocycle: A Solution and Solid State Study with Evidence for CO2 Fixation
Inorganic chemistry, 2013Co-Authors: Raquel Belda, Salvador Blasco, Conxa Soriano, Javier Pitarch-jarque, José M. Llinares, Jesús Ferrando-soria, Enrique García-españaAbstract:The synthesis of a novel cyclophane (L1) consisting of a 1H-pyrazole moiety linked through methylene groups to a 1,5,9,13-tetraazadecane chain is described. As far as we know, this is one of the first reported syntheses of a [1 + 1] condensation 1H-pyrazole azamacrocyclic ligand. The crystal structures of the complexes [Cu2(H(H–1L1))(H–1L1)](ClO4)3·3.75H2O (1) and ([Cu2(H(H–1L1))0.5(H–1L1)1.5]2(ClO4)3Br2·4.2H2O (2) show that Cu2+ coordination leads to formation of 2:2 Cu2+:L dinuclear dimeric complexes in which the 1H-pyrazole units lose a proton behaving as bis(monodentate) bridging ligands. Unlike previously reported complexes of [2 + 2] pyrazole Azamacrocycles, the pyrazolate units in 1 are pointing outward from the macrocyclic cavity to bind the Cu2+ ions. Inner coordination with formation of 1:1 Cu2+:L complexes is however observed in [1 + 1] pyridine Azamacrocycles as shown by the crystal structure here presented of the complex [CuL2](ClO4)2 (3). Crystals of [Cu3(H–1L1)2(CO3)(H2O)](ClO4)2·8H2O (4) g...
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Modulation of DNA Binding by Reversible Metal-Controlled Molecular Reorganizations of Scorpiand-like Ligands
Journal of the American Chemical Society, 2012Co-Authors: Mario Inclán, Salvador Blasco, Begoña Verdejo, M. Teresa Albelda, Juan C. Frías, Carolina Serena, Clàudia Salat-canela, Maria Luisa Díaz, Antonio Garcia-españa, Enrique García-españaAbstract:DNA interaction with scorpiand Azamacrocycles has been achieved through modulation of their binding affinities. Studies performed with different experimental techniques provided evidence that pH or metal-driven molecular reorganizations of these ligands regulate their ability to interact with calf thymus DNA (ctDNA) through an intercalative mode. Interestingly enough, metal-driven molecular reorganizations serve to increase or decrease the biological activities of these compounds significantly.
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Manganese(ii) complexes of scorpiand-like Azamacrocycles as MnSOD mimics
Chemical communications (Cambridge England), 2011Co-Authors: Ma Paz Clares, Mario Inclán, Salvador Blasco, Lucas Del Castillo Agudo, Begoña Verdejo, Conxa Soriano, Antonio Doménech, Julio Latorre, Enrique García-españaAbstract:MnII complexes of scorpiand-type Azamacrocycles constituted by a tretrazapyridinophane core appended with an ethylamino tail including 2- or 4-quinoline functionalities show very appealing in vitro SOD activity. The observed behaviour is related to structural and electrochemical parameters.
