The catalytic system [(C5H5)2TiCl]2/LiAlH4 in aromatic solvents
作者： Karel Mach , Helena Antropiusová
DOI: 10.1016/S0022-328X(00)98710-2
关键词: Aromatic solvents 、 Chemistry 、 Absorption band 、 Catalysis 、 Single line 、 Multiplicity (chemistry) 、 Stereochemistry 、 Crystallography
摘要: Abstract The reaction between (Cp 2 TiCl) and LiAlH 4 in aromatic solvents yields a stable complex compound which probably consists of linear, polynuclear form Cp TiAlH bearing TiH side groups. It is characterized by broad ESR single line Δ H 3.5.–4.5 mT at g = 1.990–1.991. binuclear complexes AlCl (I), Al(Cl)H (II) AlH (III) are successive formed as minor components. spectrum II, consisting 13 lines (α A1 0.78 mT, (bridge) 0.39 mT), that new III (IIIb, 0.36 0.40 mT) were observed for the first time. Complexes, I II IIIb show superhyperfine splitting low temperatures. Changes multiplicity this revealed (outer) close to cyclopentadienyl-hydrogen atoms 0.056–0.058 mT. All these hydrides have an electronic absorption band ( dd ) λ max 550 nm, e ∼ 130 (1 cm mol −1 ).
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sci-hub.se 参考文章(15)
G. Henrici-Olivé, S. Olivé, Electron paramagnetic resonance on transition metal complexes Journal of Organometallic Chemistry. ,vol. 19, pp. 309- 313 ,(1969) , 10.1016/S0022-328X(00)85301-2
G. Henrici-Olivé, S. Olivé, EPR investigation of transition metal complexes Journal of Organometallic Chemistry. ,vol. 23, pp. 155- 157 ,(1970) , 10.1016/S0022-328X(00)92808-0
Karel Mach, Helena Antropiusová, Vladimiŕ Hanuš, Alena Dosedlová, The mechanism of η(η5:η5-fulvalene)-di-μ-chloro-bis (η5-cyclopentadienyltitanium) formation in the system Cp2TiCl2 : LiAlH4 : Olefinic solvent Transition Metal Chemistry. ,vol. 5, pp. 5- 10 ,(1980) , 10.1007/BF01396856
Rudolph. Jungst, Dennis. Sekutowski, Jimmy. Davis, Matthew. Luly, Galen. Stucky, Structural and magnetic properties of di-.mu.-chloro-bis[bis(.eta.5-cyclopentadienyl)titanium(III)] and di-.mu.-bromo-bis[bis(.eta.5-methylcyclopentadienyl)titanium(III)] Inorganic Chemistry. ,vol. 16, pp. 1645- 1655 ,(1977) , 10.1021/IC50173A015
Chak-Po Lau, Biau-Hung Chang, R.H. Grubbs, Carl H. Brubaker, Polymer-supported metallocenes and their applications to the catalysis of olefin isomerization, oligomerization, epoxidation and dinitrogen fixation reactions Journal of Organometallic Chemistry. ,vol. 214, pp. 325- 337 ,(1981) , 10.1016/S0022-328X(81)80007-1
K. Mach, P. Sedmera, L. Petrusová, H. Antropiusová, V. Hanuš, F. Tureček, Ring closure in 1,2-divinylcyclohexanes and isomerization to 3-methyl-3a,4,5,6,7,7a-hexahydro-1h-indenes catalyzed by titanocene hydride derivatives Tetrahedron Letters. ,vol. 23, pp. 1105- 1108 ,(1982) , 10.1016/S0040-4039(00)87033-1
Karel Mach, Helena Antropiusová, Jindřich Poláček, Ethyl-substituted (π5-cyclopentadienyl)-bis(dihaloalanedi-μ-halo)titanium(III) and (η6-benzene)bis(dihaloalanedi-μ-halo)titanium(II) chloro and bromo complexes Journal of Organometallic Chemistry. ,vol. 194, pp. 285- 295 ,(1980) , 10.1016/S0022-328X(00)96184-9
B.M. Bulychev, S.E. Tokareva, G.L. Soloveichick, E.V. Evdokimova, On the interaction of cyclopentadienyltitanium(IV) chlorides with lithium aluminium hydride Journal of Organometallic Chemistry. ,vol. 179, pp. 263- 273 ,(1979) , 10.1016/S0022-328X(00)91744-3
Boris M. Bulychev, Aleksandr L. Kostenko, Natal'ya A. Yakovleva, Grigorii L. Soloveichik, Interactions in Cp2TiX-AlH3−nXn-Et2O(NEt3) systems Transition Metal Chemistry. ,vol. 6, pp. 32- 36 ,(1981) , 10.1007/BF01143464
David E. Bergbreiter, Gregory L. Parsons, Polymer-bound titanium olefin isomerization catalysts Journal of Organometallic Chemistry. ,vol. 208, pp. 47- 53 ,(1981) , 10.1016/S0022-328X(00)89174-3