Synthesis and catalytic application of monometallic molybdenum(IV) nitrile complexes

The novel molybdenum(IV) compound [MoO(NCMe)(5)][B(C(6)E(5))(4)](2) (1a) has been prepared by air oxidation of [Mo(CO)(3)(NCMe)(3)] in the presence of [H(OEt(2))(2)][B(C(6)F(5))(4)] at room temperature. The [MoO(NCMe)(5)](2+) cation shows a distorted octahedral configuration with two different acetonitrile-metal bond lengths due to a trans effect of the oxo-ligand. The trans-acetonitrile ligand is easily abstracted under oil pump vacuum to form [MoO(NCMe)(4)][B(C(6)F(5))(4)](2) (1b). The complex [MoO(NCPh)(4)][B(C(6)F(5))(4)](2) (2) is formed by substitution of acetonitrile ligands of la with benzonitrile molecules. The Mo(IV) complexes can be applied in the homopolymerization of isobutene at 30 degrees C leading to high yields and moderate molecular weights. (C) 2011 Published by Elsevier Ltd.     «

The novel molybdenum(IV) compound [MoO(NCMe)(5)][B(C(6)E(5))(4)](2) (1a) has been prepared by air oxidation of [Mo(CO)(3)(NCMe)(3)] in the presence of [H(OEt(2))(2)][B(C(6)F(5))(4)] at room temperature. The [MoO(NCMe)(5)](2+) cation shows a distorted octahedral configuration with two different acetonitrile-metal bond lengths due to a trans effect of the oxo-ligand. The trans-acetonitrile ligand is easily abstracted under oil pump vacuum to form [MoO(NCMe)(4)][B(C(6)F(5))(4)](2) (1b). The complex...     »

ISI Document Delivery No.: 725FN Times Cited: 3 Cited Reference Count: 25 Diebl, Bernd E. Yeong, Hui Yee Cokoja, Mirza Herdtweck, Eberhardt Voit, Brigitte Kuehn, Fritz E. Cokoja, Mirza/B-6906-2009; Voit, Brigitte/D-4755-2009; Kuhn, Fritz/A-3113-2010 BASF SE, Ludwigshafen This work was supported by BASF SE, Ludwigshafen. S. F. Rach and C. E. Fischer are acknowledged for proof reading of the manuscript. Professor Dr. Janos Mink (Hungarian Academy of Sciences) is also acknowledged for valuable discussions on vibrational spectroscopy. 3 Pergamon-elsevier science ltd Oxford     «

ISI Document Delivery No.: 725FN Times Cited: 3 Cited Reference Count: 25 Diebl, Bernd E. Yeong, Hui Yee Cokoja, Mirza Herdtweck, Eberhardt Voit, Brigitte Kuehn, Fritz E. Cokoja, Mirza/B-6906-2009; Voit, Brigitte/D-4755-2009; Kuhn, Fritz/A-3113-2010 BASF SE, Ludwigshafen This work was supported by BASF SE, Ludwigshafen. S. F. Rach and C. E. Fischer are acknowledged for proof reading of the manuscript. Professor Dr. Janos Mink (Hungarian Academy of Sciences) is also acknowledged for valuable di...     »