Naslov
A novel type of coordination mode of chloranilic acid leading to the formation of polymeric coordination ribbon in the series of mixed-ligand copper(II) complexes with 1, 10-phenanthroline

Autori
Molčanov, Krešimir ; Jurić, Marijana ; Kojić-Prodić, Biserka

Izvornik
Dalton transactions (1477-9226) 43 (2014), 19; 7208-7218

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
copper(II); chloranilic acid; coordination chemistry; crystal structure

Sažetak
A series of four novel mixed-ligand complexes of copper(II) with 3, 6-dichloro-2, 6-dihydroxy-1, 4-benzoquinone (chloranilic acid) and 1, 10-phenanthroline was prepared and characterised by X-ray structure analysis and IR spectroscopy. Three complexes exhibit square-pyramidal coordination whereas one is in the octahedral coordination. The ligand 1, 10-phenathroline acts in a bidentate chelating mode with N, N-metal binding. Chloranilate dianion coordinates CuII atom in a terminal bidentate ortho-quinone-like mode forming mononuclear complex species. However, in one structure a novel type of coordination mode of chloranilate is observed. In addition to the bidentate mode, a monodentate bridging one through a carboxy oxygen of a symmetry related dianion leads to the formation of polymeric coordination ribbon. Crystal packing of penta-coordinated species in addition to hydrogen bonding involves less common stacking interactions of chelate rings with π-systems of the ligands.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

Napomena
Djelomično financirala Zaklada HAZU (za 2013. godinu).

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