Citation
Sk. Hasnip et al., Kinetic and mechanistic examination of NBu4[IrH2(CO)(2)I-2] and NBu4[RhH2(CO)(2)I-2] via para-hydrogen enhanced NMR spectroscopy, CHEM COMMUN, (10), 1999, pp. 889-890
Citations number
9
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345
→ ACNP
Issue
10
Year of publication
1999
Pages
889 - 890
Database
ISI
SICI code
1359-7345(19990521):10<889:KAMEON>2.0.ZU;2-M
Abstract
para-Hydrogen enhanced NMR signals are used to show that NBu4[M(CO)(2)I-2]
(M = Rh, Ir) add hydrogen to form NBu4{all-cis-[M(H)(2)(CO)(2)I-2]} which f
or M = Ir undergoes H-2 elimination in a step where Delta H double dagger 1
06 +/- 10 kJ mol(-1) and Delta S double dagger 60 +/- 6 J K-1 mol(-1) while
showing a rich substitution chemistry with PPh3 that leads to both charged
and neutral products via square pyramidal Ir(H)(2)(CO)(2)I.