Bismuth complexes containing Mn(CO)5 and Re(CO)5 fragments. Synthetic studies and structural characterisation by solid- and solution-state extended X-ray absorption fine structure spectroscopy
摘要:
The reaction between BiCl3 and 3 equivalents of Na[Re(CO)5] affords the complex [Bi{Re(CO)5}3] 2, which is compared with the known [Bi{Mn(CO)5}3] 1. The dimetal complexes [BiCl{M(CO)5}2] (M = Mn, 3 or Re, 4) were prepared from reactions between BiCl3 and 2 equivalents of the corresponding metal carbonylate anion. The reaction between compound 1 or 2 and 0.5 equivalent of BiCl3 affords 3 and 4 respectively whilst the reaction between either 3 and 1 equivalent of BiCl3 or between BiCl3 and 1 equivalent of Na[Mn(CO)5] affords a compound formulated as [BiCl2{Mn-(CO)5}] 5. The syntheses of the bromide and iodide complexes [BiX{Mn(CO)5}2] (X = Br, 6 or 1, 7) are also described. In addition, solution infrared studies are reported on the time- and concentration-dependent decomposition of 3 in tetrahydrofuran (thf) together with details of a number of reactivity studies involving 3. Analysis of Bi-L(III) edge and Mn-K edge extended X-ray absorption fine structure spectra for compounds 3 and 4 in solid and solution phases show evidence for oligo- or polymerisation through Bi...Cl interactions in the solids. In a thf solution of 3 these interactions are disrupted, and the monomeric species formed shows co-ordination of solvent to bismuth.
Synthesis and properties of the open clusters (LnM)3μ3-E (LnM η5-CpMo/W(CO)3, Mn(CO)5; E = P, As, Sb, Bi and V)
作者:Volker Grossbruchhaus、Dieter Rehder
DOI:10.1016/s0020-1693(00)80848-8
日期:1990.6
Synthetic and structural studies on organotransition metal–bismuth nitrates
作者:R. John Errington、Louis J. Farrugia、George A. Fisher、Anja Niklaus、Nicholas C. Norman
DOI:10.1039/dt9930001201
日期:——
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 comprises 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 monodentate nitrate group. In addition there is a longer secondary intermolecular contact between the bismuth and a nitrate oxygen of an adjacent molecule which is approximately trans to the primary Bi-O bond. The complexes [Bi(NO3)(ML(n))2] [ML(n) = Fe(CO)2(eta-C5H4Me) 2, Ru(CO)2(eta-C5H5) 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 also presented on the synthesis and characterisation of the ruthenium complexes [BiRu(CO)2(eta-C5H5)}3] 4 and [BiClRu(CO)2(eta-C5H5)}2] 5 and on the reactions between bismuth nitrate and 2 equivalents of K[Mn(CO)5] or K[Co(CO)3(PR3)] (R = Ph or OPh).