The Crystal Structure of Calcium Aqua{ethylenediaminetetraacetato(3-)}Nickelate(II) Tetrahydrate, Ca[Ni(HEdta)(H2O)]2•4H2O

被引：0
|
作者：
Antsyshkina, A. S. [1 ]
Sadikov, G. G. [1 ]
Poznyak, A. L. [2 ]
Sergienko, V. S. [1 ]
机构：
[1] Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow 119991, Russia
[2] Natl Acad Sci Belarus, Inst Mol & Atom Phys, Minsk 220072, BELARUS
来源：
CRYSTALLOGRAPHY REPORTS | 2010年 / 55卷 / 01期
关键词：
ION;
D O I：
10.1134/S1063774510010086
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The crystal structure of Ca[Ni(HEdta)(H2O)](2)center dot 4H(2)O (HEdta(3-) is a protonated anion of ethyl-enediaminetetraacetic acid) is determined. The unit-cell parameters are as follows: a = 7.706(1), b = 14.923(9), and c = 26.570(5) angstrom; V = 3055.6(2.4) angstrom(3); Z - 8; and space group Pbcn. Crystals are shaped as tetragonal prisms and colored green, which is not characteristic of this class of compounds. The structure is built of Ca2+ cations, octahedral [Ni(HEdta)(H2O)](-) complex anions, and crystallization water molecules. In the complex anion, one of the acetate branches is free of coordination, whereas the remaining three branches coordinate the central atom forming glycinate metallocycles. The structure is based on sandwich layers, which are formed by networks of flat tetragonal Ca[Ni(HEdta)(H2O)](4)(H2O)(2) fragments adjoining oneanother by vertices.
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页码：35 / 40
页数：6
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