Ligand substitution in cis-bis(acetonitrile)tetrachlororhenium(IV) complex with N,N-dimethylformamide and N,N-dimethylacetamide

被引：1

作者：

Rojas-Dotti, Carlos ^{[1
,2
]}

Moliner, Nicolas ^{[1
]}

Gonzalez, Ricardo ^{[2
]}

Martinez-Lillo, Jose ^{[1
]}

机构：

[1] Univ Valencia, Dept Quim Inorgan, Inst Ciencia Mol ICMol, C Catedrat Jose Beltran 2, Valencia 46980, Spain

[2] Univ Republica, Fac Quim, Dept Estrella Campos, Catedra Quim Inorgan, Avda Gen Flores 2124,CC 1157, Montevideo, Uruguay

来源：

POLYHEDRON | 2018年 / 144卷

关键词：

Re-IV complexes; Crystal structures; Magnetic properties; N; N-dimethylformamide; N-dimethylacetamide; X-RAY-STRUCTURE; RHENIUM(IV)-COPPER(II) HETEROBIMETALLIC COMPLEXES; PROTONATED ORGANIC CATIONS; SINGLE-MOLECULE MAGNET; CRYSTAL-STRUCTURE; HEXACHLORORHENATE(IV) ANION; NEUTRON-DIFFRACTION; DEGREES K; CHAIN; CL;

D O I：

10.1016/j.poly.2018.01.009

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The preparation, crystal structures, and magnetic properties of two novel mononuclear Re-IV complexes of formula cis-[(ReCl4)-Cl-IV(dmf)(2)] (1) and cis-[(ReCl4)-Cl-IV(dma)(2)] (2) (dmf = N,N-dimethylformamide and dma = N,N-dimethylacetamide) have been studied. Both Re-IV systems were synthesized through ligand substitution reactions from the cis-[(ReCl4)-Cl-IV(MeCN)(2)] precursor, upon heating in the employed solvent. 1 and 2 crystallize in the monoclinic crystal system with space group C2/c. Each Re-IV ion exhibits a distorted octahedral environment, being bonded by two oxygen atoms from two dmf (1) and dma (2) molecules and four chloride ions. In the crystal lattice of 1 and 2, the mononuclear Re-IV complexes are placed generating short intermolecular Re-IV-Cl center dot center dot center dot Cl-Re-IV contacts. The magnetic properties of 1 and 2 were investigated through variable-temperature magnetic susceptibility measurements, which reveal significant antiferromagnetic exchange interactions between neighboring Re-IV ions. In 1, these interactions account for a maximum in the magnetic susceptibility curve at ca. 5.0 K. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：82 / 87

页数：6

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