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

Tetrahedron Letters

Volumn 52, Issue 9, 2011, Pages 955-959

  Diebl, Bernd E ^a   Yeong, Hui Yee ^b   Cokoja, Mirza ^a   Herdtweck, Eberhardt ^a   Voit, Brigitte ^b   Kühn, Fritz E ^a  

^a TECHNICAL UNIVERSITY OF MUNICH   (Germany)

^b LEIBNIZ INSTITUTE OF POLYMER RESEARCH DRESDEN   (Germany)

Author keywords

Molybdenum catalyst; Nitrile ligated complexes; Polyisobutene; Polymerization; Weakly coordinating anions

Indexed keywords

ACETONITRILE; BENZONITRILE; CATION; COORDINATION COMPOUND; ISOBUTYLENE; LIGAND; MOLYBDENUM COMPLEX; NITRILE; OIL;

AIR; ARTICLE; CATALYSIS; CHEMICAL BOND; CONTROLLED STUDY; MOLECULAR WEIGHT; OXIDATION; POLYMERIZATION; PUMP; ROOM TEMPERATURE; SYNTHESIS; VACUUM;

EID: 79251594950     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2010.12.059     Document Type: Article

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25. -1 under a static air atmosphere.
26. 2: C, 46.40; H, 2.56. Found: C, 45.52; H, 2.44.
27. 4O (1b) (1634.22): C, 41.16; H, 0.74; N, 3.43. Found: C, 41.30; H, 1.33; N, 3.15.
28. 4O (1882.50): C, 48.49; H, 1.07; N, 2.98. Found: C, 49.02; H, 1.50; N, 2.90.
29. -3. For more details see the Supplementary data.
30. CCDC 806260 (1a) contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data-request/cif.
31. 2 (20 mL), the pre-calculated amounts of catalyst and a magnetic stirring bar. The temperature of the tubes was kept constant at -25 °C before the addition of the monomer. A pre-condensed amount of isobutene was then added and the pressure tube was sealed and removed from the glove box. The polymerization was performed in a water bath at a constant temperature of 30 °C. The polymerization reaction was terminated by addition of methanol (5 mL). The product obtained was passed through alumina to remove traces of the catalyst complexes. The solvent was removed in vacuo to afford the product.