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Structural and Spectroscopic Evidence for Marginal Metal‐to‐Ligand Charge Transfer in Complexes Pt(abpy)Me 3 X, abpy = 2,2′‐Azobispyridine, X = Cl, Br, I
Author(s) -
Dogan Akbey,
Kavakli Cüneyt,
Sieger Monika,
Niemeyer Mark,
Sarkar Biprajit,
Kaim Wolfgang
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.200800353
Subject(s) - cyclic voltammetry , crystallography , chemistry , acceptor , electron paramagnetic resonance , spectroscopy , metal , ligand (biochemistry) , nuclear magnetic resonance , electrochemistry , electrode , physics , biochemistry , receptor , organic chemistry , quantum mechanics , condensed matter physics
The title complexes (X = Cl, 1a ; X = Br, 1b ; X = I, 1c ) could be characterized by 1 H‐NMR spectroscopy and were partially studied by X‐ray diffraction ( 1b,c ), cyclic voltammetry and UV‐Vis spectroscopy ( 1b ). The short N=N bonds of about 1.26Å, the occurrence of only weak charge transfer absorptions in the visible, the rather small shift of the reduction potential, and the small g anisotropy in the EPR spectrum of 1b ˙ − indicate an only a marginal π interaction between the organometallic Pt IV fragments and the excellent π acceptor abpy.