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Chelate Formation around a Hexarhenium Cluster Core by the Diphosphane Ligand Ph 2 P(CH 2 ) 6 PPh 2
Author(s) -
Chen ZhongNing,
Yoshimura Takashi,
Abe Masaaki,
Sasaki Yoichi,
Ishizaka Shoji,
Kim HaengBoo,
Kitamura Noboru
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010105)40:1<239::aid-anie239>3.0.co;2-0
Subject(s) - chelation , core (optical fiber) , ligand (biochemistry) , chemistry , cluster (spacecraft) , stereochemistry , computer science , organic chemistry , biochemistry , receptor , telecommunications , operating system
Substitution of the iodide ions in the octahedral hexarhenium cluster [Re 6 Se 8 I 6 ] 3− by the diphosphane Ph 2 P(CH 2 ) n PPh 2 generates “bridge–chelate” complexes when n =6 (dpph) with general formula [Re 6 Se 8 I 6−2 m ( μ ‐dpph) m ] 2 m −4 ( m =1–3; the picture shows the trans isomer for m =2), whereas for n =5 only a monodentate binding mode of the diphosphane is found. Stepwise substitution by dpph strongly affects the redox processes, while the photophysical properties associated with the [Re 6 Se 8 ] 2+ core change only moderately.