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Poly borane

B3Hg prepared in this way was the first poly-borane anion (1955) it is now more conveniently made by the reaction... [Pg.153]

Here t represents the number of 3c2e bonds, y the number of 2c2e bonds and 1 the charge in the case of hydridopolyborate anions (1 is negative in the case of poly-borane cations), (see Chapter 1.1.1) So, it follows for B4H10 ... [Pg.39]

It was shown that the rate of decomposition of diborane follows a rate law that corresponds to d(B2H6) = k B2H(, 2. This is consistent with the dissociation of diborane into BH3 as the rate determining step with formation of B3H9. This intermediate then decomposes with hydrogen evolution to give unstable B3H7 which on reaction with further BH3 produces B4H10 as the first isolable poly-borane ... [Pg.46]

As in the latter example, the same aminosilane employed for the synthesis of the disilaborane (Scheme 3.3-1) was used to incorporate a silicon vertex into a poly-borane cluster skeleton. However, attempts to use pentaborane(9) B5H9 for this method proved not to be successful. Instead, pentaborane(9) undergoes degradation and formation of the tetraborane derivative [B4H8SiMe(NMe2)2BH2] was observed [30],... [Pg.317]

Phosphorus azide dilluoride-borane, 4316 Poly[borane(l)], 0134 Tetraborane(lO), 0181... [Pg.78]

Poly([7,8-bis(trifluoromethyl)tetracyclo [4.2.0.02 8.05 7]octane-3,4-diyl]-1,2-ethenediyl), 3457 Poly[borane(l)], 0134 crs-Poly (butadiene), 1480 Poly(l,3-butadiene peroxide), 1528 Poly(butadiyne), 1382 Poly(carbon monofluoride), 0336 Poly(chlorotrifluoroethylene), 0589 Poly(l,3-cyclohexadiene peroxide), 2380 Poly(cyclopentadienyltitanium dichloride), 1837 Poly(diazidophosphazene), 4781 Poly(dibromosilylene), 0282 Poly(difluorosilylene), 4324 Poly(dihydroxydioxodisilane), 4474 Poly(dimercuryimmonium acetylide), 0665 Poly(dimercuryimmonium azide), 4606 Poly(dimercuryimmonium bromate), 0253 Poly (dimercury immonium iodide hydrate), 4449 Poly (dimercury immonium perchlorate), 4006 Poly(dimercuryimmonium permanganate), 4603 Poly (dime thylketene peroxide), see Poly(peroxyisobutyrolactone), 1531 Poly(dimethylsiloxane), 0918 Poly(disilicon nitride), 4752 Poly(ethenyl nitrate), see Poly(vinyl nitrate), 0760 Poly(ethylene), 0778 Poly(ethylene terephthalate), 3256 Poly(ethylidene peroxide), 0831 Poly(furan-2,5-diyl), 1398 Poly(germanium dihydride), 4409 Poly(germanium monohydride), 4407 Poly(isobutene), 1578 Poly(methyl methacrylate peroxide), 1913... [Pg.2126]

Py ridin-Boran reduziert im Gegensatzzu den iibrigen Amin-Boranen auch Carbonsauren (s.S. 149), Oxime (S.374), Hydrazone (S.371) bzw. Indole (S.87) und steht als Poly-4-vinyl-pyridin-Boran auch in polymerer Form zur Verfiigung1. [Pg.9]

Grignard chemistry was used as an alternative to hydroboration reaction by the Chujo team in its search for new n-type conjugated polymers for utilization in polymer energy storage systems. By this route, the syntheses of 7r-conjugated poly(p-phenylene-boranes) (15)35 (Fig. 12) and poly(ethynylene-phenylene-ethynylene-borane)s were reported.36... [Pg.28]

Figure 12 Some 7r-conjugatcd poly(/ -phenylene-boranes) (15). (Adapted from ref. 35.)... Figure 12 Some 7r-conjugatcd poly(/ -phenylene-boranes) (15). (Adapted from ref. 35.)...
Figure 18 Syntheses of poly(phenylphosphinoborane) [PhPH-BH2] (25) and poly(isobutylphosphinoborane) p -BuPH-BH2]K (26) from their respective phosphane-borane adducts. (Adapted from ref. 45.)... Figure 18 Syntheses of poly(phenylphosphinoborane) [PhPH-BH2] (25) and poly(isobutylphosphinoborane) p -BuPH-BH2]K (26) from their respective phosphane-borane adducts. (Adapted from ref. 45.)...
A radical initiator based on the oxidation adduct of an alkyl-9-BBN (47) has been utilized to produce poly(methylmethacrylate) (48) (Fig. 31) from methylmethacrylate monomer by a living anionic polymerization route that does not require the mediation of a metal catalyst. The relatively broad molecular weight distribution (PDI = (MJM ) 2.5) compared with those in living anionic polymerization cases was attributed to the slow initiation of the polymerization.69 A similar radical polymerization route aided by 47 was utilized in the synthesis of functionalized syndiotactic polystyrene (PS) polymers by the copolymerization of styrene.70 The borane groups in the functionalized syndiotactic polystyrenes were transformed into free-radical initiators for the in situ free-radical graft polymerization to prepare s-PS-g-PMMA graft copolymers. [Pg.41]

A. tris(Alkylamino)boranes-Derived Poly Z -(alkylamino)borazines]... [Pg.122]

Poly[/i-(alkylamino)borazines] can be prepared through a multistep thermolysis process involving tris(monoalkylamino)boranes of the type B(NHR)3 (R = Me, Pr ). Heating these molecular precursors under reduced pressure or in an inert atmosphere... [Pg.122]

Poly(ethynylene-p-phenylene-ethynylene-borane)s were also prepared by polycondensations of bifunctional lithium acetylides and aryldimethoxyborane, as shown in scheme 35.61 The polymerization between dilithium 2,5-didodecyloxybenzene-1,4-diethynilide and tripyldimethoxyborane gave the corresponding polymer in 67%... [Pg.158]

M. Matsumi, K. Naka, and Y. Chujo, Poly(p-phenylene-borane)s, novel organoboron ir-conjugated polymers via Grignard reagent,/. Am. Chem. Soc., 120 10776-10777,1998. [Pg.293]

See other pages where Poly borane is mentioned: [Pg.70]    [Pg.43]    [Pg.47]    [Pg.181]    [Pg.71]    [Pg.63]    [Pg.17]    [Pg.397]    [Pg.63]    [Pg.2045]    [Pg.70]    [Pg.43]    [Pg.47]    [Pg.181]    [Pg.71]    [Pg.63]    [Pg.17]    [Pg.397]    [Pg.63]    [Pg.2045]    [Pg.117]    [Pg.430]    [Pg.21]    [Pg.32]    [Pg.32]    [Pg.37]    [Pg.42]    [Pg.123]    [Pg.149]    [Pg.158]    [Pg.168]    [Pg.177]    [Pg.187]    [Pg.249]   
See also in sourсe #XX -- [ Pg.67 , Pg.320 ]



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Poly[7?- borane-derived

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