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
收藏
页码：1339 / 1342
页数：4
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