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Arthur E Martell - One of the best experts on this subject based on the ideXlab platform.
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anion binding of inorganic phosphates by the hexaaza macrocyclic ligand 3 6 9 17 20 23 hexaazatricyclo 23 3 1 111 15 triaconta 1 29 11 30 12 14 25 27 hexaene
Inorganic Chemistry, 1996Co-Authors: David A Nation, Joseph H Reibenspies, Arthur E MartellAbstract:The interaction of mono-, di-, and Tripolyphosphate anions with the various protonated forms of the hexaaza macrocyclic ligand BMXD, 3,6,9,17,20,23-hexaazatricyclo[23.3.1.111,15]triaconta-1(29),11(30),12,14,25,27-hexaene, was investigated by potentiometric equilibrium studies. The protonated ligand forms a number of stable binary complexes in solution with each of the anionic substrates and the strength of interaction increases in the order mono- < di- < Tripolyphosphate. Formation constants for all the species found are reported and compared with those of analogous systems. The hexahydrobromide salt of BMXD, (H6BMXD)Br6·7H2O crystallizes in the orthorhombic system, space group Pna21, with a = 11.597(4) A, b = 12.604(4) A, c = 27.361(7) A, and Z = 4. The binary complex (H4BMXD-H2P2O7)Br2·5.2H2O crystallizes in the monoclinic system, space group C2/c, with a = 28.194(6) A, b = 13.875(3) A, c = 20.811(4) A, β = 113.72(3)°, and Z = 8. The X-ray structure results reveal the nature of the interaction between t...
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host guest interactions of inorganic phosphates with the copper ii complexes of the hexaaza macrocyclic ligand 3 6 9 17 20 23 hexaazatricyclo 23 3 1 1 11 15 triaconta 1 29 11 30 12 14 25 27 hexaene
Inorganic Chemistry, 1996Co-Authors: David A Nation, Arthur E Martell, Richard I Carroll, Abraham ClearfieldAbstract:The host−guest interactions between ortho-, pyro-, and Tripolyphosphate anions and the mono and dinuclear copper(II) complexes of the hexaaza macrocyclic ligand BMXD (3,6,9,17,20,23-hexaazatricyclo[23.3.1.111,15]triaconta-1(29),11(30),12,14,25,27-hexaene) were investigated by potentiometric equilibrium methods. Ternary complexes are formed in aqueous solution as a result of coordinate bonding, hydrogen bond formation, and Coulombic attraction between the host and guest. Formation constants for all the species found are reported. The dinuclear copper(II) complexes of BMXD show strong selectivity for pyrophosphate ions in the presence of orthophosphate ions over the whole p[H] range; the pyrophosphate/Tripolyphosphate selectivity is p[H] dependent. The dinuclear copper(II) complex of BMXD, (Cu2-BMXD)(SO4)2, crystallizes in the orthorhombic space group Pccn, with a = 15.73(2) A, b = 20.27(1) A, c = 9.045(5) A, and Z = 4. The sulfate counterions are found to bridge the copper(II) ions in adjacent molecules le...
David A Nation - One of the best experts on this subject based on the ideXlab platform.
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anion binding of inorganic phosphates by the hexaaza macrocyclic ligand 3 6 9 17 20 23 hexaazatricyclo 23 3 1 111 15 triaconta 1 29 11 30 12 14 25 27 hexaene
Inorganic Chemistry, 1996Co-Authors: David A Nation, Joseph H Reibenspies, Arthur E MartellAbstract:The interaction of mono-, di-, and Tripolyphosphate anions with the various protonated forms of the hexaaza macrocyclic ligand BMXD, 3,6,9,17,20,23-hexaazatricyclo[23.3.1.111,15]triaconta-1(29),11(30),12,14,25,27-hexaene, was investigated by potentiometric equilibrium studies. The protonated ligand forms a number of stable binary complexes in solution with each of the anionic substrates and the strength of interaction increases in the order mono- < di- < Tripolyphosphate. Formation constants for all the species found are reported and compared with those of analogous systems. The hexahydrobromide salt of BMXD, (H6BMXD)Br6·7H2O crystallizes in the orthorhombic system, space group Pna21, with a = 11.597(4) A, b = 12.604(4) A, c = 27.361(7) A, and Z = 4. The binary complex (H4BMXD-H2P2O7)Br2·5.2H2O crystallizes in the monoclinic system, space group C2/c, with a = 28.194(6) A, b = 13.875(3) A, c = 20.811(4) A, β = 113.72(3)°, and Z = 8. The X-ray structure results reveal the nature of the interaction between t...
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host guest interactions of inorganic phosphates with the copper ii complexes of the hexaaza macrocyclic ligand 3 6 9 17 20 23 hexaazatricyclo 23 3 1 1 11 15 triaconta 1 29 11 30 12 14 25 27 hexaene
Inorganic Chemistry, 1996Co-Authors: David A Nation, Arthur E Martell, Richard I Carroll, Abraham ClearfieldAbstract:The host−guest interactions between ortho-, pyro-, and Tripolyphosphate anions and the mono and dinuclear copper(II) complexes of the hexaaza macrocyclic ligand BMXD (3,6,9,17,20,23-hexaazatricyclo[23.3.1.111,15]triaconta-1(29),11(30),12,14,25,27-hexaene) were investigated by potentiometric equilibrium methods. Ternary complexes are formed in aqueous solution as a result of coordinate bonding, hydrogen bond formation, and Coulombic attraction between the host and guest. Formation constants for all the species found are reported. The dinuclear copper(II) complexes of BMXD show strong selectivity for pyrophosphate ions in the presence of orthophosphate ions over the whole p[H] range; the pyrophosphate/Tripolyphosphate selectivity is p[H] dependent. The dinuclear copper(II) complex of BMXD, (Cu2-BMXD)(SO4)2, crystallizes in the orthorhombic space group Pccn, with a = 15.73(2) A, b = 20.27(1) A, c = 9.045(5) A, and Z = 4. The sulfate counterions are found to bridge the copper(II) ions in adjacent molecules le...
Abraham Clearfield - One of the best experts on this subject based on the ideXlab platform.
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host guest interactions of inorganic phosphates with the copper ii complexes of the hexaaza macrocyclic ligand 3 6 9 17 20 23 hexaazatricyclo 23 3 1 1 11 15 triaconta 1 29 11 30 12 14 25 27 hexaene
Inorganic Chemistry, 1996Co-Authors: David A Nation, Arthur E Martell, Richard I Carroll, Abraham ClearfieldAbstract:The host−guest interactions between ortho-, pyro-, and Tripolyphosphate anions and the mono and dinuclear copper(II) complexes of the hexaaza macrocyclic ligand BMXD (3,6,9,17,20,23-hexaazatricyclo[23.3.1.111,15]triaconta-1(29),11(30),12,14,25,27-hexaene) were investigated by potentiometric equilibrium methods. Ternary complexes are formed in aqueous solution as a result of coordinate bonding, hydrogen bond formation, and Coulombic attraction between the host and guest. Formation constants for all the species found are reported. The dinuclear copper(II) complexes of BMXD show strong selectivity for pyrophosphate ions in the presence of orthophosphate ions over the whole p[H] range; the pyrophosphate/Tripolyphosphate selectivity is p[H] dependent. The dinuclear copper(II) complex of BMXD, (Cu2-BMXD)(SO4)2, crystallizes in the orthorhombic space group Pccn, with a = 15.73(2) A, b = 20.27(1) A, c = 9.045(5) A, and Z = 4. The sulfate counterions are found to bridge the copper(II) ions in adjacent molecules le...
Joseph H Reibenspies - One of the best experts on this subject based on the ideXlab platform.
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anion binding of inorganic phosphates by the hexaaza macrocyclic ligand 3 6 9 17 20 23 hexaazatricyclo 23 3 1 111 15 triaconta 1 29 11 30 12 14 25 27 hexaene
Inorganic Chemistry, 1996Co-Authors: David A Nation, Joseph H Reibenspies, Arthur E MartellAbstract:The interaction of mono-, di-, and Tripolyphosphate anions with the various protonated forms of the hexaaza macrocyclic ligand BMXD, 3,6,9,17,20,23-hexaazatricyclo[23.3.1.111,15]triaconta-1(29),11(30),12,14,25,27-hexaene, was investigated by potentiometric equilibrium studies. The protonated ligand forms a number of stable binary complexes in solution with each of the anionic substrates and the strength of interaction increases in the order mono- < di- < Tripolyphosphate. Formation constants for all the species found are reported and compared with those of analogous systems. The hexahydrobromide salt of BMXD, (H6BMXD)Br6·7H2O crystallizes in the orthorhombic system, space group Pna21, with a = 11.597(4) A, b = 12.604(4) A, c = 27.361(7) A, and Z = 4. The binary complex (H4BMXD-H2P2O7)Br2·5.2H2O crystallizes in the monoclinic system, space group C2/c, with a = 28.194(6) A, b = 13.875(3) A, c = 20.811(4) A, β = 113.72(3)°, and Z = 8. The X-ray structure results reveal the nature of the interaction between t...
Richard I Carroll - One of the best experts on this subject based on the ideXlab platform.
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host guest interactions of inorganic phosphates with the copper ii complexes of the hexaaza macrocyclic ligand 3 6 9 17 20 23 hexaazatricyclo 23 3 1 1 11 15 triaconta 1 29 11 30 12 14 25 27 hexaene
Inorganic Chemistry, 1996Co-Authors: David A Nation, Arthur E Martell, Richard I Carroll, Abraham ClearfieldAbstract:The host−guest interactions between ortho-, pyro-, and Tripolyphosphate anions and the mono and dinuclear copper(II) complexes of the hexaaza macrocyclic ligand BMXD (3,6,9,17,20,23-hexaazatricyclo[23.3.1.111,15]triaconta-1(29),11(30),12,14,25,27-hexaene) were investigated by potentiometric equilibrium methods. Ternary complexes are formed in aqueous solution as a result of coordinate bonding, hydrogen bond formation, and Coulombic attraction between the host and guest. Formation constants for all the species found are reported. The dinuclear copper(II) complexes of BMXD show strong selectivity for pyrophosphate ions in the presence of orthophosphate ions over the whole p[H] range; the pyrophosphate/Tripolyphosphate selectivity is p[H] dependent. The dinuclear copper(II) complex of BMXD, (Cu2-BMXD)(SO4)2, crystallizes in the orthorhombic space group Pccn, with a = 15.73(2) A, b = 20.27(1) A, c = 9.045(5) A, and Z = 4. The sulfate counterions are found to bridge the copper(II) ions in adjacent molecules le...
