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Oxorhenium(V) Complexes with Thiosemicarbazones
Author(s) -
Santos Isabel Garcia,
Abram Ulrich
Publication year - 2004
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.200400004
Subject(s) - chemistry , rhenium , formamide , coordination sphere , pyridine , ligand (biochemistry) , medicinal chemistry , metal , toluene , stereochemistry , organic chemistry , receptor , biochemistry
Neutral oxorhenium(V) complexes with thiosemicarbazones derived from 2‐pyridine formamide, HL 1 , are formed when [ReOCl 3 (PPh 3 ) 2 ] reacts with equimolar amounts of the ligands. Reduction of the metal and the formation of rhenium(III) complexes of the composition [Re(L 1 ) 2 ] + occurs when an excess of thiosemicarbazones is used and the reaction is performed in boiling toluene for a prolonged period of time. The thiosemicarbazones deprotonate and act as tridentate ligands as has been confirmed by an X‐ray structure of [ReOCl 2 (L 1b )], where HL 1b is 2‐pyridineformamide‐N(4)‐ethylthiosemicarbazone and the ligand occupies the equatorial coordination sphere of the complex together with one of the chloro ligands.