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Molybdenum borato

Experimental Procedure 3.1.4. Preparation of a Molybdenum Vinylidene Complex from a Carbyne Complex Tetrabutylanunoniuih Cyano(ethoxycarbonyl) vinylidene (dicarbonyl) hydro-tris(3,5-dimethyl-1 -pyrazblyl)borato molybdenum [526] [37] pp 151 and 188... [Pg.94]

O4AICIN2C34H54, Aluminum, dimethanol-1,2-bis(2-hydroxy-3,5-bis(tert-butyl)benzylide-neimino)ethane-, chloride, 34 17 O4BM0N6C16H17, Molybdenum(II), dicarbonyl hydridotris( 1 -py razolyl)borato 7)-(1,2,3)-(+)-( 1 R,2R)-1 -(methoxycarbonyl)-2-propen-l-yl -, 34 105 O4B2C12H4, Diborane(4), catechol derivative, 34 4... [Pg.255]

B. DIC ARBONYL(fi5-C Y CLOPENT ADIEN YL) (TETR AFLUORO-BORATO) (TRIPHENYLPHOSPHINE)MOLYBDENUM AND TUNGSTEN, MCp(CO)2(PPh3)(FBF3)(M = Mo, W)4... [Pg.98]

F4BMo03C H5, Molybdenum, tricarbonyl-("ry -cyclopentadienyl)[tetrafluoro-borato(l -)]-, 26 96 F4BMoO,C]0H9, Molybdenum(l + 0, tricarbonyl(-ry -cyclopentadienyl)("rp-ethene)-... [Pg.419]

MoBFjO,C5H, Molybdenum, tricarbonyl-( ty -cyclopen tadienyl) [ te trafluoro-borato(l —)]-, 26 96... [Pg.423]

BFjMoCsH, Molybdenum, tricarbonyl-(ti5-cycl°Pent3d>enyl)[tetrafluoro-borato-(l -)]-, 26 96 0,BFjMoCkiH, Molybdenum(I + )tricar-bonyl(Ty-cyclopentadienyl)(Ti -ethene)-tetrafluoroborate(l-), 26 102 OiBF4WC H5, Tungsten, tricarbonyl (-rf-cyclopentadienyl)[tetrafluoroborato-(1-)]-, 26 96... [Pg.430]

Fig. 26. The central portion of Mo(CO)2-(C3H5)[H2B(Me2pz)2]. The conformation of the bis(pyrazolyl)borato ligand places one of the B-H bonds within interaction distance of the molybdenum atom (Ref. 122)... Fig. 26. The central portion of Mo(CO)2-(C3H5)[H2B(Me2pz)2]. The conformation of the bis(pyrazolyl)borato ligand places one of the B-H bonds within interaction distance of the molybdenum atom (Ref. 122)...
One of the chlorides in this complex can be exchanged for perchlorate on treatment of a solution of the complex in dichloromethane/acetonitrile with silver perchlorate2. Dicarbonyl(chloromethylidyne)[hydrotris(pyrazol-l-yl)borato]molybdenum(IV) reacted with sodium telluride in aqueous methanol to produce the anionic dicarhonyl[hydro-tris(pyrazol-l-yl)borato telluracarbonylmolybdate(0), which was isolated as the moderately air-stable tetraethylammonium salt. This salt reacted with methyl iodide in acetonitrile to form dicarbonyl[hydrotris(pyrazolo)borato](methyltelluromethylidyne) molybdenum(IV)3. [Pg.521]

During the last decade of the twentieth century, the inorganic and coordination chemistry of molybdenum has expanded substantially. Among the major developments in this period have been (1) the introduction of a versatile range of polydentate Ugands, including the tripodal tris(amido), triamidoamtne, and tris(pyrazolyl)borato species which have enabled the stabiUzation of novel species and chemistry ... [Pg.2751]

A wide series of ferrocenyl-molybdenum complexes of known redox properties bear the tris(3,5-dimethylpyrazolyl)borato ligand or the N,iV, N"-trimethyl-l,4,7-triazacyclononane ligand. They are illustrated in Scheme 7-7 [55 — 59]. [Pg.335]

The last series of tungsten complexes that have been electrochemically studied belong to the 3,5-dimethylpyrazolyl-borato complexes of the type shown in Scheme 7-7. Also in this case, they exhibit the one-electron oxidation of the ferrocenyl centre and the one-electron reduction of the molybdenum fragment [55], The relevant redox potentials are summarized in Table 7-13. [Pg.341]

MoBFaOPCwH.,i, Molybdenum(l + ), carb-onyKti -cyclopcmadienyl) (dipheny-lacetylene)(tripenylphosphine)-, tetra-fluoroborate( 1 - ), 26 104 M0BF4O2PC25H211, Molybdenum, dicarb-onyl(T) -cyclopentadienyl) (tetrafluoro-borato(l - )](triphenylphosphine)-, 26 98... [Pg.395]

While 2,2 -bipyridine or phenanthroline adducts are likely to contain an approximately planar, five-membered -M-N-C-C-N moiety, upon coordination of a RR 2C(pz)2 a six-membered cycle is formed for which a boat conformation is predicted. Nevertheless, both the internal and external angles of the formally related M-(N-N)2-E moieties (where E is not carbon), are known to be able to undergo wide variations. Indeed, X-ray studies carried out on several / ,-pyrazolato-/V,/V -derivatives showed that the six-membered ring is not always in the boat conformation. This may undergo a severe folding as in bis(3,5-dimethylpyrazolyl)borato-7V,/V ](//3-cyclohepLatrienyl) (dicarbonyl)molybdenum,195 or may even approximate a chair, or at least, a distorted chair as in dimeric bis(cyclopentadienyltitanium)(//-pyrazolato-/V,7V ) (Scheme 10a).196... [Pg.191]

Redox activity of bimetallic complexes based on tris(3,5-dimethylpyrazolyl)-borato molybdenum(II) and tungsten(II) nitrosyls. Complexes derived from ethane-1,2-diol and the crystal structure of anti [Mo(NO) HB(3,5-Me2C3HN2)3 -(0CH2CH20)]24CHCl3... [Pg.509]

BMoN7OC H22, Molybdenum, diiodonitrosyl- tris(3,5-dimethyIpyrazoIyI)hydro-borato -, 23 6... [Pg.242]

BF4MoO]C,Hj, Molybdenum, tricarbonyl- il -cyclopentadienyl)[tetraQuoro-borato -)]-, 26 96,28 5 BF4MoOjC,(,H4, Molybdenum +), tricar-bonylXTl -cyclopentadienylXil -ethene)-, tetrailuoroborate -), 26 102, 28 11... [Pg.344]

However, by development of the chemistry of the kinetically and thermodynamically stable dinuclear tris(3,5-dimethylpyrazolyl)borato molybdenum nitrosyl and oxo complexes, it has been possible to perform combined studies of electronic and magnetic interactions. The purpose of this case study is to illustrate how a wide variety of physical methods has been used in this area, and to show how, in these complexes, the electronic and magnetic interactions—despite being quite different phenomena—share the same relationship to the structure of the bridging ligand. [Pg.744]

See other pages where Molybdenum borato is mentioned: [Pg.598]    [Pg.615]    [Pg.105]    [Pg.106]    [Pg.243]    [Pg.250]    [Pg.252]    [Pg.181]    [Pg.24]    [Pg.6]    [Pg.374]    [Pg.390]    [Pg.810]    [Pg.273]    [Pg.6]    [Pg.414]    [Pg.615]   


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