Synthesis,spectroscopic investigation and X-ray structure of mononuclear and binuclear oxo complexes of rhenium(V) with pyrazolato ligands |
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| Authors: | Machura B Dzięgielewski JO Michalik S Kruszynski R Bartczak TJ Kusz J |
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| Institution: | (1) Department of Inorganic and Radiation Chemistry, Institute of Chemistry, University of Silesia, 9th Szkolna St., 40-006 Katowice, Poland;(2) X-Ray Crystallography Laboratory, Institute of General and Ecological Chemistry, Technical University of  ód , 116  eromski St., 90-924 ód, Poland;(3) Institute of Physics, University of Silesia, 4th Uniwersytecka St., 40-006 Katowice, Poland |
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| Abstract: | The {Re(O)Cl(PPh3)}2( -O)(-N2C3H3)2] (1), {Re(O)Br(PPh3)}2(-O)(-N2C3H3)2] (2), ReOCl2{
2-N2C3H3CMe2O}(PPh3)] (3) and ReOBr2{
2-N2C3H3CMe2O}(PPh3)] (4) complexes have been synthesized by reacting ReOX3(PPh3)2] with an excess of pyrazole under different conditions. The rhenium(V) centers of (1) and (2) are linked through two bridging pyrazolato anions and an oxo group. The rhenium(V) atoms in mononuclear complexes (3) and (4) are six coordinated in an octahedral environment with a trans arrangement of the oxo group and oxygen atom of anionic bidentate ligand C3H3N2C(Me)2O– formed in the reaction of pyrazole and Me2CO. |
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