The transition metal carbonyl complexes of 1,3-bis(di-R-stibino)propanes (RÂ =Â Me or Ph)

Complexes of two distibinopropanes, R2Sb(CH2)3SbR2 (R = Me or Ph), with the carbonyls of Cr, Mo, W, Fe, Mn and Ni are prepared and characterised by a range of spectrocopies. The bonding abilities of these ligands are compared with those of other stibines and with Group 16 analogues (dithio-, diseleno- and ditelluro-propanes).