ISSN:
0009-2940
Keywords:
Trisilylsilanes
;
Tripodal ligands
;
Amido complexes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A novel type of tripodal amido ligand with a totally siliconbased (trisilylsilane-derived) ligand framework has been synthesized and coordinated to tetravalent titanium and zirconium. The key compound in the ligand synthesis is the chlorosilane H3CSi{Si(CH3)2CI}3 (2) which upon condensation with a range of primary amines R-NH2 (R = aryl, alkyl) yields the amino-functionalized ligand precursors H3CSi{Si(CH3)2NHR}3 (3a-e). Their corresponding trilithium salts have been found to be the appropriate amide transfer reagents in the subsequent syntheses of the transition metal complexes. Single-crystal X-ray structure analyses of the trilithium triamide H3CSi{Si(CH3)2N(Li)tBu}3 (4a) and the Ti complex H3CSi{Si(CH3)2N(p-Tol)}3TiBr (5b) have established their respective adamantane- and [2.2.2]bicyclooctane-related cage structures.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19951280403
