ISSN:
1434-1948
Keywords:
Metallo-disilanes
;
Ligand exchange at silicon
;
Transition metal effect
;
Raman spectroscopy
;
Density functional theory
;
Chemistry
;
General Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Reaction of the sodium metalates Na[M(CO)2C5R5] [M = Fe, R = H (1a), Me (1b); M = Ru, R = H (1c), Me (1d)] with an equimolar amount of hexachlorodisilane yields the metallo-pentachlorodisilanes C5R5(OC)2M-SiCl2-SiCl3 (2a-d), which can be converted into the pentahydrido analogues C5R5(OC)2M-SiH2-SiH3 (3a-c) via Cl/H exchange with LiAlH4. Due to the activating effect of the transition metal fragment chlorination of 3a-c with CCl4 or HCCl3 occurs at the α-silicon to give C5R5(OC)2M-SiCl2-SiH3 (4a-c). The metallo-disilanes were characterised by 1H-, 13C-, 29Si-NMR, IR and especially Raman spectroscopy. The structures of C5H5(OC)2Fe-Si2Cl5 (2a) andC5Me5(OC)2Fe-Si2H5 (3b) have been determined by X-ray analysis; 2a,b, 3a,b were theoretically described by DFT calculations.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource