Abstract
[Os[sub 3](CO)[sub 12]] reacted with the surface of [gamma]-Al[sub 2]O[sub 3] to give a supported osmium carbonyl cluster, which was fragmented under He at 150[degrees]C to give osmium subcarbonyls. These surface species were characterized by infrared, [sup 13]C NMR, and extended x-ray absorption fine structure (EXAFS) spectroscopies and by x-ray absorption near edge spectroscopy (XANES). They are formulated as [Os(CO)[sub x][l brace]HOA[r brace][sub y][l brace]OA[r brace][sub z]], where the braces represent groups at the [gamma]-Al[sub 2]O[sub 3] surface and x is 2 or 3 and y + z = 6 [minus] x. When the osmium tricarbonyl (x = 3) was treated under vacuum at 300[degrees]C, it lost one CO ligand and gained one surface oxygen ligand. The surface species are both coordinatively saturated and characterized by an Os-O[sub support] bonding distance of 2.17 [angstrom]; in these respects, they are close analogues of organometallic compounds. 31 refs., 8 figs., 2 tabs.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
