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Chelating Complexes of Diethylzinc and ZnCl 2 with 2,2‐Bipyridine and 1,6,7,12,13,18‐Hexaazatrinaphthylene (HATN) as Ligands
Author(s) -
Krahmer Jan,
Beckhaus Ruediger,
Saak Wolfgang,
Haase Detlev
Publication year - 2008
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200800138
Subject(s) - chemistry , bipyridine , spectroscopy , ultraviolet visible spectroscopy , homo/lumo , 2,2' bipyridine , infrared spectroscopy , diethylzinc , crystallography , zinc , mass spectrometry , derivative (finance) , chelation , inorganic chemistry , molecule , organic chemistry , crystal structure , catalysis , physics , chromatography , quantum mechanics , financial economics , economics , enantioselective synthesis
The 1,6,7,12,13,18‐hexaazatrinaphthylene (HATN) complex [(Et 2 Zn) 3 (μ 3 ‐HATN)] was synthesized and characterized by IR spectroscopy, UV/Vis spectroscopy, elemental analysis and ESI‐MS spectrometry. Attempts to prepare ZnCl 2 complexes of HATN leads only to the mononuclear [(Cl 2 Zn)(HATN)] derivative, characterized by X‐ray diffraction, IR‐ and UV/Vis‐spectroscopy as well as ESI‐MS spectrometry. The bright red 2,2′‐bipyridine (bipy) complex [(Et 2 Zn)(bipy)] ( 1 ) was synthesized and characterized by X‐ray diffraction and NMR spectroscopy. The UV/Vis‐spectra of the HATN‐complexes show absorptions in regions of far longer wavelengths than the corresponding 2,2′‐bipyridine or 1,10‐phenantroline complexes. Consequently the π*‐LUMO of HATN ( 5 ) is lower in energy than the π*‐LUMO of 2,2′‐bipyridine ( 2 ) or 1,10‐phenanthroline (phen).
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