ISSN:
0749-1581
Keywords:
2D NMR
;
π-Allyl
;
Ligand exchange
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 1H NMR spectrum of Pt[η3-CH2C(CH3)CH2](SnCl3)(PhCH=CH2) (1), which is complicated by the existence of two isomers, has been interpreted using (195Pt, 1H)-INVERSE, J-resolved, COSY-90 and NOESY two-dimensional methods. The two isomers are shown to be involved in slow exchange processes, and one intermediate in the exchange, Pt[CH2C(CH3)CH2](SnCl3)33- (4), has been identified and characterized via 1H, 13C, 119Sn and 195Pt spectroscopy. NOESY measurements show that neither 1 nor 4 is involved in an η3 →η1 isomerization, so that 4 must be involved in the dynamics with 1 via loss of a tin-containing fragment, presumably SnCl3-. Uncoordinated PhCH=CH2 has been detected in solution and shown to exchange with the complexed PhCH=CH2 in both isomers of 1.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260270411
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