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Syntheses of 4-Benzyl-3,5-dimethylpyrazolylborato Complexes of Molybdenum and Tungsten Nitrosyls: Molecular Structure of [ Mo( CO),( NO)(HB(3,5-Me2-4-PhCH,C,N,),)I, a Complex with an 'Inverted' Bowl-like Structure

Elefteria Psillakis, John C Jeffery, Jon A McCleverty, Stefan S Kurek, Michael D Ward, Rob M Richardson, Andrzej Wlodarczyk

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URIhttp://purl.tuc.gr/dl/dias/E5E4EECF-346F-4A6A-8772-8EDB7345DE17-
Identifierhttps://doi.org/10.1039/DT9940002559-
Languageen-
Extent5 pagesen
TitleSyntheses of 4-Benzyl-3,5-dimethylpyrazolylborato Complexes of Molybdenum and Tungsten Nitrosyls: Molecular Structure of [ Mo( CO),( NO)(HB(3,5-Me2-4-PhCH,C,N,),)I, a Complex with an 'Inverted' Bowl-like Structure en
CreatorElefteria Psillakisen
CreatorJohn C Jefferyen
CreatorJon A McClevertyen
CreatorStefan S Kureken
CreatorMichael D Warden
CreatorRob M Richardsonen
CreatorAndrzej Wlodarczyken
PublisherRoyal Society of Chemistryen
Content SummaryReaction of [HB(bdmpz),] , obtained by reaction of 4-benzyl-3,5-dimethylpyrazole (Hbdmpz) with KBH,, with [M(CO),] (M = Mo or W) and p-MeC,H,SO,N(NO)Me afforded [M(CO),(NO)- {HB(bdmpz),}] (M = Mo or W). The molybdenum carbonyl was converted into [Mo(NO)- {HB(bdmpz),}X(Y)] (X = Y = CI, I or OC,H,Me-p; X = CI, Y = OMe or OC,H,Me-p) the spectral and electrochemical properties of which are virtually identical to those of [Mo( NO){HB(dmpz),}X(Y)] (Hdmpz = 3.5-dimethylpyrazole), indicating that the addition of a benzyl group has no significant electronic effect in the new species. However, a crystal and molecular structure determination of [Mo(CO),( NO){HB( bdmpz),}] revealed that the molecule has a highly symmetrical structure, the CH, groups of the benzyl groups in the tris(pyrazoly1)borate ligand being disposed in a star-shaped configuration where the phenyl rings adopt an 'inverted' bowl-like structure with the BH group inside and the Mo(CO),(NO) group outside the bowl. The arrangement of the 4-benzyl groups with respect to the pyrazolyl rings and the H-B Mo three-fold axis is strongly reminiscent of an inverted threelegged 'Isle of Man' symbol.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-09-25-
Date of Publication1994-
Bibliographic CitationJ. C Jeffery, S. S Kurek, J. A McCleverty, . E.Psillakis, R. M Richardson, M. D Ward, A.Wlodarczyk , "Syntheses of 4-Benzyl-3,5-dimethylpyrazolylborato Complexes of Molybdenum and Tungsten Nitrosyls: Molecular Structure of [ Mo( CO),( NO)(HB(3,5-Me2-4-PhCH,C,N,),)I, a Complex with an 'Inverted' Bowl-like Structure",J. of the Chem. So. Dalt. Transact. vol. 17 ,pp.2559-2564,1994.doi:10.1039/DT9940002559en

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