Tungsten methylidyne

Further surveys of the reactivity of HB(C6F5)2 with simple organometallic compounds have led to the discovery of more novel boron-based ligand systems. For example, reactions with Schrock s tungsten methylidyne family L4W(X)=CH63 (L = phosphine, X = Cl, OTf) result in electrophilic attack on the methylidyne ligand hydride abstraction... [Pg.11]

Protonation of 12 yields a compound best described as a face-protonated methylidyne complex, the tungsten-carbon bond length lying in the range observed for a triple bond (28). Protonation of the osmium compound 13 yields a true carbene complex, which for R = Ph has been characterized by X-ray crystallography (see Sections IV and VI). [Pg.133]

METHYLIDYNE (CARBYNE) COMPLEXES. fnmHBROMO-TETRACARBONYL(PHENYLMETHYLIDYNE)TUNGSTEN]... [Pg.172]

NBFjOsWCmH, Tungsten(l +) pentacar-bonyl-[(diethylamino)methylidyne]-tetrafluoroborate( 1 -), 26 40 NBr04SCraHls, Bicyclo(2.2.l)heptane-7-methanesulfonate, 3-bromo-l, 7-di-methyl-2-oxo-... [Pg.424]

N,05WCii)H(h, Tungsten, tetracarbonyl[(di-ethylamino)methylidyne](isocyanato)-trans-, 26 42... [Pg.426]

By ring forming reactions /rans-Bromotetracarbonyl(methyl-methylidyne)tungsten, 49 Calcium acetate, 60 Chromium carbene complexes, 82 Ethyl (Z)-3-bromoacrylate, 130 Methyllithium, 188 By ether cleavage Diphosphorus tetraiodide, 127 Other methods... [Pg.396]

Bromopentacarbonylmanganese, 49 tom -Bromotetracarbonyl(methyl-methylidyne)chromium, 50 frChromium carbonyl, 51 Decacarbonyldimanganese, 49 Dicarbonylcyclopentadienylcobalt, 96 Dicarbonyl(cyclopentadienyl)[(dimethyl-sulfonium)methyl]iron(II) tetrafluoroborate, 98... [Pg.405]

Trichloroisopropoxytitanium, 300 Trichloromethyltitanium, 216 Triisopropoxymethyltitanium, 213 Triisopropoxy[ l-(trimethylsilyl)-l, 2-bu-tadienyljtitanium, 218 Tungsten Compounds /rans-Bromotetracarbonyl(methyl-methylidyne)tungsten, 49 Hydrogen peroxide-Sodium tungstate, 145... [Pg.415]

S. J. Holmes, D. N. Clark, H. W. Turner, and R. R. Schrock, o-Hydride Elimination from Methylene and Neopentylidene Ligands. Preparation and Protonation of Tungsten(IV) Methylidyne and Neopentylidyne Complexes, J. Am. Chem. Soc. 104, 6322-6329 (1982). [Pg.289]

WBF4N2P4C34H55, Tungsten(IV), bis[l,2-ethanediylbis(diphenylphosphine)]-(isocyanomethane)[(methylamino)-methylidyne]-, tram-, tetrafluoro-borate(l-), 23 11... [Pg.298]

WBF4N2P4C64H41, TUngsten(IV), bis[l,2-ethanediylbis(diphenylphosphine)](2-is-ocyano-2-methylpropane)[(methyl-amino)methylidyne]-, tram-, tetrafluo-roborate(l-), 23 12 WB2F8N2P4Q6H54, Tungsten(IV), bis[l,2-ethanediylbis(diphenylphosphine)]-bis[(methylamino)methylidyne]-, tram-, bis[tetrafluoroborate(l -)], 23 2 WB2F,N2P4C Hm, Tungsten(IV), bis[l,2-ethanediylbis(diphenylphosphine)]bis-[(4-methylphenyl)amino]methylidyne]-, tram-, bis[tetrafluoroborate(l —)], 23 14... [Pg.298]

BF4WC,oHio, Tungsten(l + ), pentacar-bonyl[(diethylamino)methylidyne]-, te-trafluoroborate(l-), 26 40 05CoMoNiCi7Hi3, Nickel, cyc/o-p3-ethyli-dyne-1 2 3-K C-pentacarbonyl-1 K C,2K C-bis( 1,3(T] )cyclopenta-dienyl]cobaltmolybdenum-, Co—Mo) (Co—Ni) Mo—Ni), 27 192 OsCrNC 8H 3, Chromium, (benzoyl isocyan-ide)dicarbonyl(V-methylbenzoate)-, 26 32... [Pg.407]

OsN2WC,oH,o, Tungsten, tetracarbonyl[(di-ethylamino)methylidyne](isocy-anato)-, irons-, 26 42 05P2RhC45H7i, Rhodium(I), carbonyl(hy-drogen phthalato)bis(tricyclohexyl-phosphine)-, 27 291... [Pg.407]

PHOSPHINE)](ISOCYANOMETHANE)[(METHYLAMINO)-METHYLIDYNE]TUNGSTEN(IV) TETRAFLUOROBORATE... [Pg.12]

C. 77L4iVS-BIS[l,2-ETHANEDIYLBIS(DIPHENYLPHOSPHINE)]-BIS-[(METHYLAMINO)METHYLIDYNE]TUNGSTEN(IV) BIS(TETRAFLUOROBORATE) ... [Pg.13]

OjMoNCioH, Molybdenum, (fert-butyl isocyanide)pentacarbonyl-, 28 143 OjNWCigH, Tungsten, (rert-butyl iso-cyanide)pentacarbonyl-, 28 143 0,N2 VC H , Tungsten, tetracarbonyl((di-ethylamino)methylidyne](isocyanato)-, trans-, 26 42... [Pg.394]

WBF4N05C,oH, Tungsten(l+), pentacar-bonyl[(diethyiamino)methylidyne]-, tetrafluoroborate(l-), 26 40 WBF4O2PC2SH20, Tungsten, dicarbonyl(Ti -cyclopentadienyi)[tetrafluorobor-ato(l -)l(triphenylphosphine)-, 26 98, 28 7... [Pg.424]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...