Crystal structures of calcium and barium oxalato(ethylenediamine-N,N′-diacetato)× chromates(III) M[Cr(Edda)(C2O4)]2·5H2O (M = Ca, Ba)
作者： M. Zabel , A. L. Poznyak , V. I. Pavlovskii
DOI: 10.1007/S10947-007-0104-Y
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摘要: The crystal structure of Ca[Cr(Edda)(C2O4)]2·5H2O and Ba[Cr(Edda)(C2O4)]2·5H2O (H2Edda — ethylenediamine-N,N′-diacetic acid) was determined by X-ray diffraction analysis. nearest environment alkaline earth ions consists the oxygen atoms neighboring [Cr(Edda)(C2O4)]− complex (five for Ca four Ba) water molecules that complete coordination number to eight. Two two are linked into a ring; each atom in ring is bonded oxalate ion bridge another anion. This results centrosymmetric hexanuclear supramolecular assembly. anions alternate form an infinite chain, which Ba additionally via with one
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