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Cruz V, Martinez S, Martinez-Salazar J, Polo-Cerón D, Gómez-Ruiz S, Fajardo M, Prashar S. 3D-QSAR study of ansa-metallocene catalytic behavior in ethylene polymerization. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.05.081] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gómez-Ruiz S, Prashar S, Fajardo M, Antiñolo A, Otero A. Synthesis, structural characterization and reactivity of new tin bridged ansa-bis(cyclopentadiene) compounds: X-ray crystal structures of Me2Sn(C5Me4R-1)2 (R=H, SiMe3). J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.03.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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128
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Gómez-Ruiz S, Prashar S, Sánchez-Barba LF, Polo-Cerón D, Fajardo M, Antiñolo A, Otero A, Maestro MA, Pastor CJ. Synthesis and catalytic applications of C1 symmetric group 4 ansa-metallocene complexes. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2006.09.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Polo-Cerón D, Gómez-Ruiz S, Prashar S, Fajardo M, Antiñolo A, Otero A. Synthesis of Bulky Zirconocene Dichloride Compounds and Their Applications in Olefin Polymerization. ACTA ACUST UNITED AC 2007. [DOI: 10.1135/cccc20070747] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The bulky substituted cyclopentadienyllithium derivatives, LiC5H4(CHMeR) (R = C6H5 (1), 1-naphthyl (2), 9-anthryl (3)), were synthesized from the reaction of 6-phenylfulvene, 6-(1-naphthyl)fulvene or 6-(9-anthryl)fulvene with LiMe. The ansa-bis(cyclopentadiene) ligands Me2Si(C5HMe4){C5H4(CHMeR)} (R = C6H5 (4), 1-naphthyl (5), 9-anthryl (6)), and their lithium derivatives Li2(Me2Si(C5Me4){C5H3(CHMeR)}) (R = C6H5 (7), 1-naphthyl (8), 9-anthryl (9)) have been prepared. The zirconocene complexes, [Zr(η5-C5H5){η5-C5H4- (CHMeR)}Cl2] (R = C6H5 (10), 1-naphthyl (11), 9-anthryl (12)) and [Zr{η5-C5H4(CHMeR)}2Cl2] (R = C6H5 (13), 1-naphthyl (14), 9-anthryl (15)), were synthesized by the reaction of lithium derivatives 1-3 and [Zr(η5-C5H5)Cl3] or ZrCl4, respectively. The reaction of the lithium ansa-derivatives 7-9 and zirconium tetrachloride yielded the ansa-zirconocene complexes, [Zr(Me2Si(η5-C5Me4){η5-C5H3(CHMeR)})Cl2] (R = C6H5 (16), 1-naphthyl (17), 9-anthryl (18)). The zirconocene complexes have been tested in the polymerization of ethene and propene. The polymerization of propene with the ansa-zirconocene catalysts 16-18 gave polypropylene with 70% mmmm pentads and the symmetric zirconocene catalysts 13-15 30-60% mmmm pentads.
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Gómez-Ruiz S, Hey-Hawkins E. Oxidative cleavage of tetraaryltetraphosphane-1,4-diides by nickel(ii) and palladium(ii): formation of unusual Ni0 and Pd0 diaryldiphosphene complexes. Dalton Trans 2007:5678-83. [DOI: 10.1039/b711616k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gómez-Ruiz S, Höcher T, Prashar S, Hey-Hawkins E. A Novel Constrained-Geometry Niobocene Complex with a Phosphanidoalkylcyclopentadienyl Ligand: [Nb(NtBu){(η5-C5H4)CMe2PPh-κP}{(η5-C5H4)CMe2PHPh}]. Organometallics 2005. [DOI: 10.1021/om0500319] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Antiñolo A, Fajardo M, Gómez-Ruiz S, López-Solera I, Otero A, Prashar S. Hydrosilylation in the Design and Functionalization of ansa-Metallocene Complexes. Organometallics 2004. [DOI: 10.1021/om049791u] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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