The synthesis,structure and reactivity of new tetra- and pentacoordinated rhodium(I) complexes |
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| Authors: | Anna M Trzeciak J J Ziólkowski |
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| Institution: | (1) Institute of Chemistry, University of Wroc aw, 50-383 Wrocaw, Poland |
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| Abstract: | Summary Tetracoordinated complexes of the Rh{P(OPh)3}3X] type (X=N3, NO2 or NCS) were obtained in the reaction of Rh{P(OPh)3}3Cl] with NaX. Pentacoordinated Rh{P(OPh)3}4X] complexes (X=HSO4, H2PO4, MeCO2, HCO2 or ClO4) were prepared by treating Rh{P(OPh)3}3 {P(OC6H4)(OPh)2}] or Rh(acac) {P(OPh)3}2]+P(OPh)3 (Hacac=acetylacetone) with acids HX.The groups of complex differ in reactivity towards CO and H2; Rh{P(OPh)3}3X] complexes do not react with dihydrogen and with CO they produce Rh{P(OPh)3}2(CO)X]. The Rh{P(OPh)3}4X] complexes take up H2 reversibly, and with CO they give Rh{P(OPh)3}3(CO)2X] compounds. |
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