The crystal structure of NbCl5
The crystal structure of NbCl5
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NbCl5的晶体结构
DOI：
10.1107/s0365110x58001651
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发表时间：
1958
期刊：
影响因子：
--
通讯作者：
D. Sands
中科院分区：
文献类型：
--
作者：
A. Zalkin;D. Sands
NbCl/sub5/为单斜晶系，晶胞参数为a==18.30，b=17.96，c=5.588 A，β=90.6℃。空间群为C2/m，晶胞中有12个NbCl/sub5/单元。该结构由二聚体(Nb/sub2/Cl/sub10/)组成，氯原子形成两个共用边的八面体。Nb原子占据八面体的中心，并被两个氯桥键占据。Nb--Cl桥键长度为2.56A，Nb--Cl非桥键长度为2.25和2.30A。NbBr/sub5/和Tacl/sub5/与上述结构同构。(身份验证)
NbCl/sub 5/ crystallizes in the monoclinic system with a == 18.30, b = 17.96, c = 5.588 A, BETA = 90.6 deg . The space group is C2/m, and there are 12 NbCl/sub 5/ units in the unit cell. The structure consists of dimers (Nb/sub 2/Cl/sub 10/) with the chlorine atoms forming two octahedra which share a common edge. The niobinm atoms occupy the centers of the octahedra and are loined by two chlorine bridge bonds. The Nb--Cl bridge bond length is 2.56 A; the Nb--Cl non-bridge bond lengths are 2.25 and 2.30 A. NbBr/sub 5/ and TaCl/sub 5/ appear to be isomorphous with the above structure. (auth)