SYNTHETIC AND STRUCTURAL STUDIES ON ORGANOTRANSITION METAL BISMUTH NITRATES

The reaction between Bi(NO3)3.5H2O and 2 equivalents of K[Fe(CO)2(eta- C5H5)] affords the iron-bismuth complex [Bi(NO3){Fe(CO)2(eta-C5H5)}2] 1 which was characterised by X-ray crystallography. Complex 1 comprise s a bismuth atom in a trigonal-pyramidal co-ordination geometry bonded to two Fe(CO)2(eta-C5H5) fragments and the oxygen atom of a monodenta te nitrate group. In addition there is a longer secondary intermolecul ar contact between the bismuth and a nitrate oxygen of an adjacent mol ecule which is approximately trans to the primary Bi-O bond. The compl exes [Bi(NO3)(ML(n))2] [ML(n) = Fe(CO)2(eta-C5H4Me) 2, Ru(CO)2(eta-C5H 5) 3, Mo(CO)3(eta-C5H5) 6, Mo(CO)3(eta-C5H4Me) 7, W(CO)2(eta-C5H5) 8, W(CO)3(eta-C5H4Me) 9 or Cr(CO)3(eta-C5H5) 10] have also been prepared and characterised by spectroscopic and analytical methods. Data are al so presented on the synthesis and characterisation of the ruthenium co mplexes [Bi{Ru(CO)2(eta-C5H5)}3] 4 and [BiCl{Ru(CO)2(eta-C5H5)}2] 5 an d on the reactions between bismuth nitrate and 2 equivalents of K[Mn(C O)5] or K[Co(CO)3(PR3)] (R = Ph or OPh).