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

被引：71

作者：

Nation, DA ^{[1
]}

Martell, AE ^{[1
]}

Carroll, RI ^{[1
]}

Clearfield, A ^{[1
]}

机构：

[1] TEXAS A&M UNIV,DEPT CHEM,COLLEGE STN,TX 77843

来源：

INORGANIC CHEMISTRY | 1996年 / 35卷 / 25期

关键词：

D O I：

10.1021/ic960661q

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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[23.3.1.1(11,15)]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, (Cu-2-BMXD)(SO4)(2), crystallizes in the orthorhombic space group Pccn, with a = 15.73(2) Angstrom, b = 20.27(1) Angstrom, c = 9.045(5) Angstrom, and Z = 4. The sulfate counterions are found to bridge the copper(II) ions in adjacent molecules leading to an extended polymeric structure.

引用

页码：7246 / 7252

页数：7

共 31 条

[1] MULTIFUNCTIONAL MOLECULAR RECOGNITION OF ATP, ADP AND AMP NUCLEOTIDES BY THE NOVEL RECEPTOR 2,6,10,13,17,21-HEXAAZA[22]METACYCLOPHANE [J].