名称:
[Ni(L)(MeCN)]2+complex cation as a template for the assembly of extended I3−·I5− and I5−·I7− polyiodide networks {L=2,5,8-trithia[9](2,9)-1,10-phenanthrolinophane}. Synthesis and structures of [Ni(L)(MeCN)]I8 and [Ni(L)(MeCN)]I12
摘要:
The compounds [Ni(L)(MeCN)]I-8 (1) and [Ni(L)(MeCN)]I-12 (2) have been obtained from the reactions of the complexes [Ni(L)(L')][BF4]((2+n)) {L=2,5,8-trithia[9](2,9)-1,10-phenanthrolinophane; L'=MeCN, Cl-, Br-, I-; n=charge of L'} with an excess of I-2 (molar ratios of 6, 10 and 20 have been used), in the presence of the stoichiometric amount of I- (as (Bu4NI)-N-n) necessary to balance the charge of the complex cation [Ni(L)(L')]((2+n)+). An X-ray diffraction analysis shows that, independently of the nature of L', both 1 and 2 contain the complex cation [Ni(L)(MeCN)](2+), which is therefore capable of templating two different polyiodide networks based on interacting I-3(-)/I-5(-) and I-5(-)/I-7 units, respectively. The solid state FT-Raman spectra of 1 and 2 are discussed based on their structural features. (C) 2004 Elsevier B.V. All rights reserved.