Polytypic phase transition in alkyl chain-functionalized valence tautomeric complexes

Dalton Transactions : an International Journal of Inorganic Chemistry
Daisuke KiriyaSusumu Kitagawa

Abstract

A novel series of valence tautomeric (VT) complexes, [Co(Cnbpy)(3,5-DTBQ)2] (Cnbpy = 4,4'-dialkyl-2,2'-bipyridine (alkyl = (C(n)H(2n+1)) where n = 0 (CoC0bpy), 1 (CoC1bpy), 5 (CoC5bpy), 9 (CoC9bpy) and 13 (CoC13bpy); 3,5-DTBQ = 3,5-di-tert-butylsemiquinonate or catecholate), including two previously reported complexes (CoC0bpy and CoC1bpy), were systematically prepared and their properties examined. Introduction of alkyl groups into VT chromophores leads to unexpected variations in the VT process, depending on the lengths of the alkyl chains. An even more interesting observation is that significant polytypic phase transitions with crystallographic symmetry changes accompanying the abrupt VT conversion are induced for the first time in CoC9bpy and CoC13bpy.

References

Jul 3, 2003·Journal of the American Chemical Society·Robert N MullerSophie Laurent
Jun 5, 2004·Chemical Communications : Chem Comm·Amber L ThompsonM Carmen Munoz

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Citations

Jul 2, 2009·Chemical Communications : Chem Comm·Daisuke KiriyaSusumu Kitagawa
Apr 10, 2010·Chemical Communications : Chem Comm·Daisuke KiriyaHo-Chol Chang
Feb 20, 2014·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Naoya IkutaShigeru Murata
Apr 9, 2016·Inorganic Chemistry·Olga DrathColette Boskovic
Aug 18, 2016·Chemistry : a European Journal·Daniël L J BroereJarl Ivar van der Vlugt
Mar 28, 2008·Journal of the American Chemical Society·Daisuke KiriyaSusumu Kitagawa

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