Journal of Organometallic Chemistry p. 343 - 348 (1997)
Update date:2022-08-03
Topics:
Hodson, Annabelle G. W.
Reaction of [MoCl(CO)2(η3-CH2(COCl)C=CH2)phen] (phen = 1,10-phenanthroline) (1) with 1,2-ethanediol or N,N′-diethylethylenediamine in 2:1 mole ratio gave dimeric complexes [MoCl(CO)2(η3-CH2(COACH2)C=CH2)phen]2 containing two molybdenum centres bridged by a pair of η3-bonded butadienyl units linked by 2-substituted ester (A = O) or amide (A = NEt) groups. Analogous reactions involving hydroquinone or 1,4-phenylenediamine led to monomeric complexes of the type [MoCl(CO)2(η3-CH2(COA)C=CH2)phen] (A = OC6H4OH, NHC6H4NH2), however, dimeric complexes were isolated from reactions involving 4,4′-ethylenedianiline or p-xylylenediamine. Attempts to prepare a novel complex bridged by three linked amide substituted butadienyl groups using diethylenetriamine were unsuccessful, however, reaction of 1 and triethanolamine or tris(2-aminoethyl)amine in 3:1 mole ratio gave trimeric complexes [MoCl(CO)2(η3-CH2(COACH2CH2)C=CH2)phen]3N (A = O, NH) in good yield.
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