THE CRYSTAL-STRUCTURE OF TETRAPHENYLARSONIUM-TETRABROMOOXOTECHNETATE(V), (PH4AS)TCOBR4

被引：9

作者：

HUBENER, R ^{[1
]}

ABRAM, U ^{[1
]}

机构：

[1] UNIV TUBINGEN,INST ANORGAN CHEM,MORGENSTELLE 18,W-7400 TUBINGEN 1,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1992年 / 617卷 / 11期

关键词：

TECHNETIUM; STRUCTURE; OXO COMPOUNDS;

D O I：

10.1002/zaac.19926170116

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

(Ph4As)TcOBr4 has been prepared from (Bu4N)TcO4, HBr and (Ph4As)Br. The crystal structure of the complex has been determined by X-ray diffraction using MoKalpha radiation. The crystals are tetragonal, space group P 4/n with a = 1 276.6(1) pm, c = 803.2(1) pm, Z = 2. The refinement based on 1 595 reflexes converged to R = 0.034. The structure consists of discrete TcOBr4-anions and Ph4As+ cations. The technetium is coordinat ed in a square pyramidal environment. A C4v symmetry was derived for the complex anion. With this, it is isomorphous to the other structurally studied (Ph4As)TcYX4 complexes (Y = 0, N; X = Cl, Br). The Tc = 0 length is 161.3(9) pm with Tc-Br 246.0(1) pm.

引用

页码：96 / 98

页数：3

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