Synthesis, Structural Characterization, Electrochemistry, and Reactivities of Heptaosmium Carbonyl Clusters Bearing Thioxane Ligands – Crystal and Molecular Structures of [Os7(CO)16{(μ-S(CH2)2OCH2CH2}2], [Os7(CO)17{(μ-S(CH2)2OCH2CH2}{S(CH2)2OCH2CH2}], and [Os7(CO)18{(μ-S(CH2)2OCH2CH2}]

✍ Scribed by Kelvin Sze-Yin Leung; Wing-Tak Wong

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 401 KB
• Volume: 1999
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(199910)1999:10<1757::aid-ejic1757>3.0.co;2-o

✦ Synopsis

Reaction of the activated heptaosmium cluster [Os 7 (CO) 19 made up of four tetrahedra sharing three common faces.

From electrochemical studies, the extent of the cathodic (MeCN) 2 ] with 1,4-thioxane in CH 2 Cl 2 at ambient temperature led to the isolation of three air-stable clusters shifts of the reduction waves of these clusters were found to differ from that of the parent cluster [Os 7 (CO 2) and of 2 with carbon monoxide produced an isomer of 3, namely compound 4, which has the same molecular formula as 3, but [Os 7 (CO) 18 {µ-S(CH 2 ) 2 OCH 2 C a H 2 (S-C a )}] (3). The metal skeletons of these clusters are in the form of a winding helix a different ligand arrangement.