[Ni(L)(MeCN)]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 |
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Authors: | M Carla Aragoni Francesco Demartin Alessandra Garau Vito Lippolis Silvia Rizzato |
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Institution: | a Dipartimento di Chimica Inorganica ed Analitica, Università di Cagliari, S.S. 554, Bivio per Sestu, I-09042 Monserrato, CA, Italy b Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Via G. Venezian 21, I-20133 Milano, Italy |
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Abstract: | The compounds Ni(L)(MeCN)]I8 (1) and Ni(L)(MeCN)]I12 (2) have been obtained from the reactions of the complexes Ni(L)(L′)]BF4](2 + n) {L=2,5,8-trithia9](2,9)-1,10-phenanthrolinophane; L′=MeCN, Cl−, Br−, I−; n=charge of L′} with an excess of I2 (molar ratios of 6, 10 and 20 have been used), in the presence of the stoichiometric amount of I− (as Bu4nNI) 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 I3−/I5− and I5−/I7 units, respectively. The solid state FT-Raman spectra of 1 and 2 are discussed based on their structural features. |
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Keywords: | Macrocyclic ligands Ni complexes Polyiodides Raman X-ray crystal structure |
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