首页> 外文期刊>Crystallography reports >Crystal and molecular structure of barium cyclohexane-1,2-diamine-N,N,N ' N '-tetraacetatonickeloate decahydrate Ba[Ni(Cdta)] center dot 10H(2)O
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Crystal and molecular structure of barium cyclohexane-1,2-diamine-N,N,N ' N '-tetraacetatonickeloate decahydrate Ba[Ni(Cdta)] center dot 10H(2)O

机译:十水合钡[Ni(Cdta)]中心点10H(2)O的环己烷钡-1,2-二胺-N,N,N'N'-四乙酸镍酯

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The X-ray diffraction study of Ba[Ni(Cdta)] (.) 10H(2)O is performed (R1 = 0.0441 for 5136 observed reflections). The crystals are triclinic, a = 8.833(2) angstrom, b = 9.025(2) angstrom, c = 16.922(3) angstrom, alpha = 80.56(3)degrees, beta = 82.77(3)degrees, gamma = 76.98(3)degrees, Z = 2, and space group P1. The crystal is built of the [Ni(Cdta)](2-) anionic complexes, the [Ba(H2O)(6)](2+) hydrated cations, and crystallization water molecules. The distorted octahedral coordination of the Ni atom includes two N and four O atoms of the Cdta(4-) ligand (mean Ni-N, Ni-O-G, and Ni-O-R are 2.080, 2.082, and 2.036 angstrom, respectively). The irregular nine-fold coordination of the Ba atom consists of six O atoms of water molecules and three O(Cdta) atoms from three anionic complexes (Ba-O, 2.715-3.090 angstrom). With consideration for the bonds with three Ba atoms, the Cdta(4-) ligand is octadentate (2N + 6O) and fulfills the pentadentate mu(4)-bridging function. The structural units are linked through an extended network of hydrogen bonds. (c) 2005 Pleiades Publishing, Inc.
机译:进行了Ba [Ni(Cdta)] 10H(2)O的X射线衍射研究(对于5136个观察到的反射,R1 = 0.0441)。晶体是三斜晶的,a = 8.833(2)埃,b = 9.025(2)埃,c = 16.922(3)埃,alpha = 80.56(3)度,beta = 82.77(3)度,γ= 76.98(3度,Z = 2,并且空间组P1。该晶体由[Ni(Cdta)](2-)阴离子络合物,[Ba(H2O)(6)](2+)水合阳离子和结晶水分子组成。 Ni原子的扭曲八面体配位包括Cdta(4-)配体的两个N和四个O原子(平均Ni-N,Ni-O-G和Ni-O-R分别为2.080、2.082和2.036埃)。 Ba原子的不规则九折配位由六个水分子O原子和三个阴离子配合物(Ba-O,2.715-3.090埃)中的三个O(Cdta)原子组成。考虑到具有三个Ba原子的键,Cdta(4-)配体为八齿(2N + 6O),并具有五齿的mu(4)桥联功能。结构单元通过扩展的氢键网络连接。 (c)2005年Pleiades Publishing,Inc.

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