Table 3: 1H, and 31P -N.M.R. chemical shifts and 2J (31P-1H), 1J (103Rh-1H) and 1J (1Rh-31P) coupling constants of complexes (No.21-31). (In CDCl3).

Comp. No. X Y δ1H Hydride(p.p.m.) δ31P{1H}(p.p.m.) 2J(31P-1H)(Hz) 1J(103Rh-1H)(Hz) 1J(103Rh-31P)(Hz)
21. H H -12.09 28.7 12.0 12.4 102
22. 2-OH H -12.30 31.4 12.0 12.4 107
23. 4-NO2 H -12.05 29.0 12.0 12.7 107
24. 4-Br H -12.16 28.2 12.0 12.5 103
25. 3-OH 4-Me -12.36 32.35 12.0 12.50 111
26. H 4-Me -13.27 29.51 12.0 12.45 108
27. 4-NO2 4-Me -13.27 29.60 12.0 12.54 111
28. H 5-Me -12.15 32.30 11.0 12.50 111
29. 2-OH 5-Me -12.36 32.33 11.0 12.45 111
30 2-OH - -13.08 29.20 11.0 13.3 120
31 2-OH - -11.49-12.36 37.8729.54 11.011.0 12.5012.80 111118