ISSN:
0009-2940
Keywords:
Titanium complex
;
Diazadiene ligand
;
Envelope structure
;
Benzyl compound
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Diazadiene Complexes of Electron-Deficient Transition Metals: Synthesis, Properties, and Structure of CpTi(diazadiene)ClThe electron-deficient 1,4-diazadiene (DAD) complex CpTi-(DAD)Cl (3), [DAD=1],4-bis(4-methoxyphenyl)-2,3-dimethyl-1,4-diazabutadiene] is prepared either by reduction of CpTiCl3 (1) with magnesium in the presence of free DAD (2) or by the reaction of 1 with Na2DAD. NMR spectroscopic and X-ray diffraction analysis of 3 indicate that the bonding of the DAD ligand has σ2,π-metallacyclopentene rather than η4;-π character. As a result of steric repulsion between the Cp ring and methyl groups of the DAD ligand 3 exhibits a supine (exo) geometry for DAD coordination is solid state. Substitution reaction of 3 affords the novel complex CpTi(DAD)R (R=CH2Ph).
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911240509
