Complexation of trimeric copper(I) and silver(I) 3,5-bis(trifluoromethyl)pyrazolates with amine-borane

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作者：

AA Titov，EA Guseva，A. F. Smol'yakov，FM Dolgushin，ES Shubina

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摘要：

A complexation of trimeric copper( i ) and silver( i ) 3,5-bis(trifluoromethyl)pyrazolates ((ML) 3 ) with BH 3 NEt 3 was studied by IR spectroscopy in hexane and dichloromethane solutions. In hexane, two complexes [(ML) 3 ][BH 3 NEt 3 ] 2 ( 1 ) and [(ML) 3 ][BH 3 NEt 3 ] ( 2 ) were formed depending on the ratio of reagents. In dichloromethane, only one complex [(ML) 3 ][BH 3 NEt 3 ] ( 2 ) was found. The thermodynamic parameters (Δ H ○ , Δ S ○ ) of complex 1 in hexane and complex 2 in dichloromethane were obtained. The complex [(AgL) 3 ][BH 3 NEt 3 ] was isolated in the solid state, its structure was established by X-ray diffraction. The complex is formed due to two bridges B-H-Ag, one BH group is not involved in the complexation. In crystal, molecules 2 form supramolecular dimers due to the intermolecular interactions between metals of two macrocycles.

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关键词：

copper and silver macrocyclic pyrazolates boron hydrides amine-boranes complexes IR spectroscopy X-ray diffraction analysis

DOI：

10.1007/s11172-013-0263-2

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年份：

2014