Synthesis and characterization of some heteroleptic copper(II) complexes based on meso-substituted dipyrrins

Gupta, Rakesh Kumar ; Yadav, Mahendra ; Pandey, Rampal ; Pandey, Daya Shankar (2011) Synthesis and characterization of some heteroleptic copper(II) complexes based on meso-substituted dipyrrins Journal of Chemical Sciences, 123 (6). pp. 819-826. ISSN 0253-4134

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Official URL: http://www.ias.ac.in/describe/article/jcsc/123/06/...

Related URL: http://dx.doi.org/10.1007/s12039-011-0169-1

Abstract

The syntheses and characterizations of meso-substituted dipyrrins, 5-(4-imidazol-1-yl-phenyl)-dipyrromethene (4-impdpm), 5-(4-nitro-imidazol-1-yl-phenyl)-dipyrromethene, (4-nimpdpm), 5-(4-benzimidazol-1-yl-phenyl)-dipyrromethene (4-bimp-dpm) and heteroleptic complexes [Cu3(4-impdpm)2(hfacac)4] 1, [Cu(4-nimpdpm)(acac)] 2, [Cu(4-nimpdpm)(hfacac)] 3, [{Cu(4-bimpdpm)(acac)}n] 4 and [{Cu(4-bimpdpm)-(hfacac)}n] 5, imparting acetylacetonato (acac) and hexafluoroacetylacetonato (hfacac) groups as co-ligand have been described. The dipyrrins and complexes 1-5 have been characterized by elemental analyses and spectral (IR ESI-MS, NMR, electronic absorption and emission) studies. Crystal structures of 1, 3 and 4 have been authenticated by X-ray single crystal analyses. The reaction between 4-impdpm and Cu(hfacac)2 gave a trimetallic complex, under analogous conditions 4-nimpdpm and 4-bimpdpm reacted with Cu(acac)2 and Cu(hfacac)2·2H2O to afford mononuclear (2, 3) and 1D polymeric (4, 5) complexes.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Coordination Polymers; Meso-substituted Dipyrrins; Heteroleptic; Acetylacetonato; Hexafluoroacetylacetonato; Copper Complexes
ID Code:105140
Deposited On:21 Apr 2017 05:21
Last Modified:21 Apr 2017 05:21

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