Selective Recognition of Different Tartratogermanate Anions using 1,10-phenantroline Complexes of Fe(II), Co(II), Ni(II)

摘要

abstract_textpThis study describes synthesis and structure features of new heterometallic mixed-ligand cation-anionic complexes {Fe(phen)(3)Ge-2(OH)(2)(mu-Tart)(2)}(2) . 13H(2)O(I), Co(phen)(3)(2){Ge-2(OH)(H(2)Tart)(mu-Tart)(2)}Cl . 11H(2)O(II), Ni(phen)(3)Ge-2(OH)(2)(mu-Tart)(2) . 5H(2)O(III), Ni(phen)(3)(2){Ge-2(OH)(H(2)Tart)(mu-Tart)(2)}Cl . 11H(2)O(IV) (Tart - tartaric acid, phen - 1,10-phenantroline)-potential drugs, nutritional supplements and growth stimulants. Two forms of tartratogermanate anions are selectively recognized using Fe (II), Co (II), Ni (II) 1,10-phenantroline cations as receptors. The Ge-2(OH)(2)(mu-Tart)(2)(2-) (I, III) contains two Ge atoms bounded by two bridging tartaric acids, the coordination polyhedron of both five-coordinated Ge atoms is a trigonal bipyramid, while in the Ge-2(OH)(H(2)Tart)(mu-Tart)(2)(3-) (II, IV) two Ge atoms have different coordination polyhedrons - trigonal bipyramid and distorted octahedron, formed through the additional terminal tartaric acid. Cations with the common formula Me(phen)(3)(2+) (Me=Co, Fe, Ni) form the coordination polyhedron octahedron./p/abstract_text