ISSN:
1572-879X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Rh(CO)2(acac) reacts with P(m-C6H4SO3Na.H2O)3 (P/Rh 〉 3.5) in water under CO to give HRh(CO)[P(m-C6H4SO3Na)3]3 (1a), the structure of which is similar to HRh(CO) (PPh3)3 (1b). High pressure NMR spectra of an aqueous solution containing1a and three molar excess of P(m-C6H4SO3Na)3 does not show the formation of new species up to 200 atm of CO∶H2(1∶1). In contrast,1b, in the presence of three molar excess of PPh3, is completely converted to HRh(CO)2(PPh3)2 (2b) under 30 atm CO/H2(1∶1) in toluene. The activation energy of the dissociation of P(m-C6H4SO3Na)3 from1a in water was found to be 30±1 kcal/mol, which is 11±1 kcal/mol higher than the dissociation of PPh3 from1b in toluene.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00774589
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