Tetrakis(4-amino-1,2,4-triazole)platinum(II) Salts: Syntheses, Crystal Structures, and Properties

被引：6
作者：
Carpenter, Julia A. [1 ]
Dshemuchadse, Julia [1 ]
Busato, Stephan [1 ]
Braeunlich, Irene [1 ]
Poethig, Alexander [2 ]
Caseri, Walter [1 ]
机构：
[1] Eidgenoss Tech Hsch ETH Zurich, Dept Mat, CH-8093 Zurich, Switzerland
[2] Tech Univ TU Munchen, Catalysis Res Ctr, D-85748 Garching, Germany
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2014年 / 640卷 / 05期
基金：
瑞士国家科学基金会;
关键词：
N-Ligands; X-ray diffraction; Platinum; Platinates; SPIN TRANSITION; COMPLEXES; TRIAZOLE; 4-AMINO-1,2,4-TRIAZOLE; DERIVATIVES;
D O I：
10.1002/zaac.201300605
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Transparent crystals comprising the nitrogen-rich coordination unit [Pt(NH(2)trz)(4)](2+) were synthesized with counterions of various sizes but of the same charge (-1), yielding the compounds [Pt(NH(2)trz)(4)]Cl(2<bold>)2</bold>H2O, [Pt(NH(2)trz)(4)](NO3)(2) and [Pt(NH(2)trz)(4)](CF3SO3)(2), with NH(2)trz designating 4-amino-1,2,4-triazole. Single-crystal X-ray diffraction analysis showed that NH(2)trz coordinates with only the nitrogen atom in 1-position in all compounds. The [Pt(NH(2)trz)(4)](2+) units are stacked such that the platinum atoms form linear arrays with Pt-Pt spacings mostly uncorrelated to anion size. The compound with the smallest anion (Cl-) has the smallest Pt-Pt spacing (4.72 angstrom) and shows a quasi-one-dimensional structure. Thermal decomposition of the compounds was observed around 200 degrees C. Electrical conductivity of [Pt(NH(2)trz)(4)]Cl-2 and [Pt(NH(2)trz)(4)](SO3CF3)(2) was investigated and found to be humidity-dependent. Finally, [Pt(NH(2)trz)(4)](2+) ions obtained by dissolution of the chloride salt are shown to be useful for the synthesis of new compounds such as the Magnus' salt derivative [Pt(NH(2)trz)(4)][PtCl4].
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页码：724 / 732
页数：9
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