Author
Xiaohong Bei
Bio: Xiaohong Bei is an academic researcher from University of Iowa. The author has contributed to research in topics: Reactivity (chemistry) & Alkyl. The author has an hindex of 2, co-authored 2 publications receiving 193 citations.
Topics: Reactivity (chemistry), Alkyl, Carborane, Ligand
Papers
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TL;DR: In this article, the synthesis, structures, bonding, and reactivity of neutral (Ox)2MR2 and cationic (O2MR+ zirconium and hafnium alkyl complexes which contain substituted 8-quinolinolato ligands are described.
160 citations
TL;DR: The reaction of Cp*(η5-C2B9H11)TiMe (1, cp* = C5Me5) with CO (0.5−1 atm) in toluene (−78 to 23 °C) yields a 1:4 mixture of C p*( η5:η1-8-CHMeO-C 2B 9H10)Ti(NCMe).
34 citations
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511 citations
Patent•
01 Jul 1998TL;DR: In this paper, a cyclic catalyst precursor with formula (1) wherein M is a Group IVB metal, each L is a monovalent, bivalent, or trivalent anion, X and Y are each heteroatoms, and each cyclo is a Cyclic moiety; each R1 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group IIIA to Group VIIA elements.
Abstract: A catalyst precursor having formula (1) wherein M is a Group IVB metal; each L is a monovalent, bivalent, or trivalent anion; X and Y are each heteroatoms; each Cyclo is a cyclic moiety; each R1 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group IIIA to Group VIIA elements, and two or more adjacent R1 groups may be joined to form a cyclic moiety; each R2 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group IIIA to Group VIIA elements, and two or more adjacent R2 groups may be joined to form a cyclic moiety; W is a bridging group; and each m is independently an integer from 0 to 5.
280 citations
TL;DR: In this paper, a family of chelating amine bis(phenolate) zirconium dibenzyl complexes were synthesized in quantitative yields from a versatile family of amine−bis((2-hydroxyaryl)methyl) precursors, their X-ray structures solved, and their reactivity in the polymerization of 1hexene in the presence of B(C6F5)3 studied.
256 citations
TL;DR: In this paper, the Entdeckung einer Klasse hochaktiver Eisenkatalysatoren 1 was beleuchtet, angesichts der Tatsache, das Eisen auf diesem Gebiet bis dahin vollig bedeutungslos war.
Abstract: Auch Komplexe spater Ubergangsmetalle sind aktive und selektive Katalysatoren fur die Polymerisation von α-Olefinen. Die Entdeckung einer Klasse hochaktiver Eisenkatalysatoren 1 beleuchtet, angesichts der Tatsache, das Eisen auf diesem Gebiet bis dahin vollig bedeutungslos war, die Moglichkeiten zur Entdeckung neuer Katalysatoren. Entdeckungen wie diese losten in den letzten Jahren sowohl in Universitats- als auch in Industrielaboratorien eine intensive Suche nach neuen Katalysatoren aus. R1 = H, Me; R2 = Me, iPr; R3 = H, Me, iPr; R4 = H, Me; X = Halogen.
219 citations
TL;DR: In this article, the pyridine ring ortho positi... was methylated with a stoichiometric amount of methyl alumoxane (PMAO) in toluene.
Abstract: Reaction of {2,6-bis[2,6-(i-Pr)2PhNC(Me)]2(C5H3N)}VCl3·1.3(CH2Cl2) (1) with stoichiometric amount of methyl alumoxane (PMAO) in toluene resulted in the methylation of the pyridine ring ortho positi...
195 citations