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Title

Flat vs. Folded Chelate Rings in cis-PtIIa2 (a = NH3, a2 = en, a2 = 2, 2′-bpy) Complexes of Twofold Substituted Diazine Ligands

AuthorsGrebe, Philipp von; Sanz Miguel, Pablo J. ; Lippert, B.
Issue Date2012
PublisherWiley-VCH
CitationJournal of Inorganic and General Chemistry 638(11): 1691-1698 (2012)
AbstractAcid-base and ligating properties of three bis(substituted)pyrazine (pz) and pyrimidine (pym) ligands (pyrazine-2, 5-dicarboxylic acid, 2, 5-pzdcH2, 2, 3-bis(pyridine-2-yl)pyrazine, 2, 3-bppz, pyrimidine-4, 6-dicarboxylic acid, 4, 6-pmdcH 2) toward cis-Pt IIa 2 (a = NH 3, a 2 = en, a 2 = 2, 2'-bpy) have been studied. Combinations of pz-N/pym-N with donor atoms of the substituents lead to 5-membered platinum chelates, but exclusive N, N-coordination through the pyridyl substituents of 2, 3-bppz can lead to a 7-membered platinum chelate with a characteristic L-shape of the resulting cation. It is observed for Pt II(2, 2'-bpy), yet not for Pt II(en), and is a consequence of differences in sterical interactions between the 2, 3-bppz ligand and the coligands of Pt II. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URIhttp://hdl.handle.net/10261/64655
DOI10.1002/zaac.201200306
Identifiersdoi: 10.1002/zaac.201200306
issn: 0044-2313
e-issn: 1521-3749
Appears in Collections:(ISQCH) Artículos
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