75170-92-2Relevant academic research and scientific papers
THE CHEMISTRY OF HETERO-ALLENE AND -ALLYLIC DERIVATIVES WITH RHODIUM AND IRIDIUM. II. RHODIUM(I)- AND IRIDIUM(I)-PHOSPHINE COMPLEXES OF HETERO-ALLYLIC LIGANDS OF THE TYPE - (X = S, NR, O) AND - (Q = S, O). SYNTHESIS AND 31P-NMR
Thewissen, D. H. M. W.,Ambrosius, H. P. M. M.,Gaal, H. L. M. van,Steggerda, J. J.
, p. 101 - 114 (1980)
Some known and new hetero-allylic derivatives - (X = S, NR, O) and - (Q = S, O) have been shown to react with rhodium(I)- and iridium(I)-phosphine compounds to give stable complexes M(PPh3)2 (A) and M(PPh3)2 (B) (M = Rh, Ir) in which the ligands are bidentate.P, S(P) and O(P) are always coordinated and the coordination preference of the other atoms is: S > NR > O.A and B react with carbon monoxide to give M(PPh3)(CO) and M(PPh3)(CO), respectively, in which CO is preferentially found trans to the chelate donor atom with the lowest trans-influence. A correlation between and 2J(P1-P2)cis of 0.946 was found; and even better correlation with r = 0.988 gave the equation; 2J(P1-P2)cis = 0.43 - 0.072/1J(Rh-P1) - 1J(Rh-P2)/ - 30.8 Hz.A similar correlation was shown by a number of asymmetric cis-Pt0-bis-phosphine (η2-ligand) complexes and trans- and cis-WLL'-(CO)4 complexes reported in the literature.
