91382-41-1Relevant academic research and scientific papers
Rhodium-(I) and -(III) Complexes of Diphenylphosphinous Acid and Secondary Phosphites
Duncan, J. Andrew S.,Stephenson, T. Anthony,Walkinshaw, Malcolm D.,Hedden, David,Roundhill, Max
, p. 801 - 808 (2007/10/02)
After shaking 2> (C8H12=cyclo-octa-1,5-diene) with PPh2Cl in methanol-water (7:1 v/v) for 15 min, addition of MCl gave high yields of triple-chloride-bridged anionic complex M2> .The structure of (2a) (CH2Cl2 trisolvate) has been verified by X-ray analysis.The crystals are triclinic, space group P1 with a=12.157(4), b=16.191(5), c=20.523(8) A, α=96.02(3), β=99.88(2), γ=96.10(2), and Z=2.Variable-temperature 31P- n.m.r. spectroscopy indicates that (2a) undergoes facile intramolecular scrambling of the phosphorous nuclei at ambient temperature.Reaction of theanion (2) with BF3.Et2O leads to the formation of the 2>(1-) anion (3).In contrast, reaction of 2> with PPh2Cl in methanol-water (15:1 v/v) gives the cations 4>(1+) and 4>(1+), which do not undergo hydrolysis of the co-ordinated PPh2(OMe) ligand.The 4>(1+) cation is also formed by reaction of Y (Y=ClO4(1-) or BPh4(1-); L2=Ph2AsCH2CH2AsPh2, PhSCH2CH2SPh, or 2,2-bipyridyl) with PPh2(OEt) whereas with the (1+) cation, 2> (4) is isolated.However, reaction of with H2 followed by addition of P(OR)2(O)H (R=Me or Et) gives the unstable cations 2>(1+).
