One Dimensional Chain and Ribbon Cobalt-Dioxolene Coordination Polymers: A New Valence Tautomeric Compound

被引：20

作者：

Drath, Olga ^{[1
]}

Gable, Robert William ^{[1
]}

Poneti, Giordano ^{[2
]}

Sorace, Lorenzo ^{[3
,4
]}

Boskovic, Colette ^{[1
]}

机构：

[1] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia

[2] Univ Fed Rio de Janeiro, Inst Quim, BR-21941901 Rio De Janeiro, Brazil

[3] Univ Florence, UdR INSTM, I-50019 Sesto Fiorentino, Italy

[4] Univ Florence, Dept Chem U Schiff, I-50019 Sesto Fiorentino, Italy

来源：

CRYSTAL GROWTH & DESIGN | 2017年 / 17卷 / 06期

基金：

澳大利亚研究理事会;

关键词：

MAGNETIC-PROPERTIES; SPIN-CROSSOVER; PHASE-TRANSITION; METAL-COMPLEXES; CATECHOLATE; FRAMEWORKS; DYE; INTERCONVERSION; CRYSTALS;

D O I：

10.1021/acs.cgd.7b00110

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The combination of the divergent tetrakis-pyridyl linking ligand 1,2,4,5-tetra(4-pyridyl)benzene (tpb) with cobalt and 3,5-di-tert-butyldioxolene (3,5-dbdiox) ligands has afforded the complexes [Co(3,5-dbdiox)(2)(tpb)](infinity) (1) and [Co(3,5-dbdiox)(2)(tpb)(0.5)](infinity) (2). Both species are 1D coordination polymers that crystallize as the hydrated compounds 1 center dot 3H(2)O and 2 center dot 9H(2)O. While the tpb in complex 1 is a 2-connecting linker, affording a conventional 1D chain, the tpb in 2 is a 4-connecting linker, giving rise to a ribbon topology. Single crystal X-ray structural analysis indicates that 1 center dot 3H(2)O and 2 center dot 9H(2)O both possess the {Co-III(3,5-dbcat)(3,5-dbsq)} (3,5-dbcat = 3,5-di-tert-butylcatecholate; 3,5-dbsq = 3,5-di-tert-butyl-semiquinonate) charge distribution at 100 or 130 K, respectively. Variable temperature magnetic susceptibility studies of partially dehydrated 1 center dot H2O indicate a thermally induced valence tautomeric (VT) transition above 300 K.

引用

页码：3156 / 3162

页数：7