Crystal structure determination of thallium carbodiimide, Tl2NCN

被引：17

作者：

Stork, Ludwig ^{[1
]}

Liu, Xiaohui ^{[1
]}

Fokwa, Boniface P. T. ^{[1
]}

Dronskowski, Richard ^{[1
]}

机构：

[1] Univ Aachen, Rhein Westfal TH Aachen, Inst Inorgan Chem, D-52056 Aachen, Germany

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2007年 / 633卷 / 09期

关键词：

thallium; cyanamide; carbodiimide; crystal structure; volume increment;

D O I：

10.1002/zaac.200600323

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Orange-red single crystals of thallium carbodiimide, Tl2NCN, have been grown from an aqueous solution of cyanamide and thallium carbonate under strongly basic conditions. Tl2NCN crystallizes in space group P (1) over bar with a = 5.338(1), b = 6.626(2), c = 9.645(3) angstrom, alpha = 98.765(4)degrees, beta = 98.685(4)degrees, 7 = 113.178(4)degrees, and Z = 3; the structure can be considered a strongly distorted anti-CdI2 type. One finds two crystallographically different and irregular [NCN]Tl-6 octahedra in which the Tl-N distances of the three-coordinate monovalent thallium ions lie between 2.52 and 2.72 angstrom. The two symmetry-inequivalent NCN2- units adopt the carbodiimide shape, and the course of its molar volume as a function of the monovalent counter cation is analyzed.

引用

页码：1339 / 1342

页数：4

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