Mori, M.; Shibata, M.; Kyuno, E., Bulletin of the Chemical Society of Japan, 1956, vol. 29, p. 887 - 890
作者:Mori, M.、Shibata, M.、Kyuno, E.、Nakajima, H.
DOI:——
日期:——
Crystal structure of NaBa2[Co(Edta)]2(ClO4)3 · 9H2O
作者:M. Zabel、V. I. Pawlowski、A. L. Poznyak
DOI:10.1134/s1070328406090053
日期:2006.9
Crystals of Ba Na ethylenediaminetetraacetatocobaltate(III) perchlorate, NaBa2[Co(Edta)](2)(ClO4)(3)center dot 9H(2)O, contain two crystallographically nonequivalent Ba2+ cations and two complex cations [Co(Edta)](Edta(4-) is ethylenediaminetetraacetic acid anion), the latter anions showing opposite chirality. The nearest surrounding of the Ba2+ ions involves three water molecules (including two bridging water molecules), six O atoms of four complexes [Co(Edta)]- and the perchlorate O atom. Tetrameric fragments Ba-2(H2O)(4)[Co(Edta)](2)(ClO4)(2) are united through the Ba-O bonds into layers with the Ba atoms in the middle of the layers and the perchlorate ions and complex anions at the periphery; in the latter anions, noncoordinated O atom of one of the R-metallocycles is directed outside. The Na atom of the Na(H2O)(ClO4) group located between the layers is bonded to these O atoms of the neighboring layers.