Document Detail


Reaction of an Osmium(VI) Nitrido Complex with Cyanide: Formation and Reactivity of an Osmium(III) Hydrogen Cyanamide Complex.
MedLine Citation:
PMID:  21997896     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Reaction of [Os(VI) (N)(L(1) )(Cl)(OH(2) )] (1) with CN(-) under various conditions affords (PPh(4) )[Os(VI) (N)(L(1) )(CN)(Cl)] (2), (PPh(4) )(2) [Os(VI) (N)(L(2) )(CN)(2) ] (3), and a novel hydrogen cyanamido complex, (PPh(4) )(2) [Os(III) {N(H)CN}(L(3) )(CN)(3) ] (4). Compound 4 reacts readily with both electrophiles and nucleophiles. Protonation and methylation of 4 produce (PPh(4) )[Os(III) (NCNH(2) )(L(3) )(CN)(3) ] (5) and (PPh(4) )[Os(III) (NCNMe(2) )(L(3) )(CN)(3) ] (6), respectively. Nucleophilic addition of NH(3) , ethylamine, and diethylamine readily occur at the C atom of the hydrogen cyanamide ligand of 4 to produce osmium guanidine complexes with the general formula [Os(III) {N(H)C(NH(2) )NR(1) R(2) }(L(3) )(CN)(3) ](-) , which have been isolated as PPh(4) salts (R(1) =R(2) =H (7); R(1) =H, R(2) =CH(2) CH(3) (8); R(1) =R(2) =CH(2) CH(3) (9)). The molecular structures of 1-5 and 7 and 8 have been determined by X-ray crystallography.
Authors:
Jing Xiang; Wai-Lun Man; Shek-Man Yiu; Shie-Ming Peng; Tai-Chu Lau
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-13
Journal Detail:
Title:  Chemistry (Weinheim an der Bergstrasse, Germany)     Volume:  -     ISSN:  1521-3765     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9513783     Medline TA:  Chemistry     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
Institute of Molecular Functional Materials and Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong (P.R. China), Fax: (+852) 34420522.
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