Adduct formation between zinc and cadmium oxydiacetates and imidazol. Crystal structures of [Zn(Him)2(oda)]n and [Cd2(Him)4(oda)2(H2O)]2·6H2O (Him=imidazol, oda=oxydiacetate)
摘要:
The two new compounds [Zn(Him)(2)(oda)](n) (1) and [Cd-2(Him)(4)(oda)(2)(H2O)](2). 6H(2)O (2) (Him=imidazol, oda=oxydiacetate) have been prepared and their structures determined by single-crystal X-ray diffraction studies. Compound 1 consists of polymeric chains formed by ZnN2O2 tetrahedral units bridged by the carboxylate groups of extended oda ligands; 2 is tetranuclear with the cadmium atoms in pentagonal bipyramidal CdN2O5 coordination geometry. The extended structures and the hydrogen-bonding patterns displayed by both the compounds were examined. (C) 1999 Elsevier Science S.A. All rights reserved.
A process comprises (a) combining (1) at least one base and (2) at least one metal carboxylate salt comprising (i) a metal cation selected from metal cations that form amphoteric metal oxides or oxyhydroxides and (ii) a lactate or thiolactate anion, or metal carboxylate salt precursors comprising (i) at least one metal salt comprising the metal cation and a non-interfering anion and (ii) lactic or thiolactic acid, a lactate or thiolactate salt of a non-interfering, non-metal cation, or a mixture thereof; and (b) allowing the base and the metal carboxylate salt or metal carboxylate salt precursors to react.
A process comprises (a) combining (1) at least one base and (2) at least one metal carboxylate salt comprising (i) a metal cation selected from metal cations that form amphoteric metal oxides or oxyhydroxides and (ii) a lactate or thiolactate anion, or metal carboxylate salt precursors comprising (i) at least one metal salt comprising the metal cation and a non-interfering anion and (ii) lactic or thiolactic acid, a lactate or thiolactate salt of a non-interfering, non-metal cation, or a mixture thereof; and (b) allowing the base and the metal carboxylate salt or metal carboxylate salt precursors to react.
Adduct formation between zinc and cadmium oxydiacetates and imidazol. Crystal structures of [Zn(Him)2(oda)]n and [Cd2(Him)4(oda)2(H2O)]2·6H2O (Him=imidazol, oda=oxydiacetate)
The two new compounds [Zn(Him)(2)(oda)](n) (1) and [Cd-2(Him)(4)(oda)(2)(H2O)](2). 6H(2)O (2) (Him=imidazol, oda=oxydiacetate) have been prepared and their structures determined by single-crystal X-ray diffraction studies. Compound 1 consists of polymeric chains formed by ZnN2O2 tetrahedral units bridged by the carboxylate groups of extended oda ligands; 2 is tetranuclear with the cadmium atoms in pentagonal bipyramidal CdN2O5 coordination geometry. The extended structures and the hydrogen-bonding patterns displayed by both the compounds were examined. (C) 1999 Elsevier Science S.A. All rights reserved.