Novel diphenyl thioether-bridged binuclear metallocenes of Ti and Zr for synthesis of polyethylene with broad molecular weight distribution

Autor: Herbert Schumann, Zuyun Shi, Yujing Nie, Junquan Sun, Wenxia Yin, Lincai Wang

Publikováno v: Journal of Applied Polymer Science. 120:3530-3535

Two diphenyl thioether-bridged binuclear metallocenes of Ti and Zr, [(C5H5)Cl2MC5H4CH2(p-C6H4)]2S [M = Ti (1) and Zr (2)], have been synthesized by treating the dilithium salts of the corresponding ligand [(C5H5CH2(p-C6H4)]2S with two equivalents of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42805c5280c7815df79d09d10e03c004
https://doi.org/10.1002/app.33514

One- and Two-Electron-Transfer Reactions of (dpp-Bian)Sm(dme)3

Autor: Igor L. Fedushkin, Markus Hummert, Herbert Schumann, Olga Maslova

Publikováno v: Inorganic Chemistry. 49:2901-2910

The reduction of 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene (dpp-Bian) with an excess of samarium in 1,2-dimethoxyethane (dme) affords the Sm(II) complex (dpp-Bian)Sm(dme)(3) (1). The reaction of 1 with 0.5 mol equiv of 1,2-dibromostilbene pro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6cbbf818a617b9c6ca0eebb97535468
https://doi.org/10.1021/ic902439x

Homogeneously catalyzed epoxidation of α,β-unsaturated ketones using simple aluminum salts and aqueous H2O2—Is it possible?

Autor: Ulf Schuchardt, Herbert Schumann, Roberto Rinaldi, Heitor F.N. de Oliveira

Publikováno v: Journal of Molecular Catalysis A: Chemical. 307:1-8

Simple aluminum salts activate hydrogen peroxide towards α,β-unsaturated ketones, affording as major products α,β-epoxyketones. The pathway of this reaction involves the interaction between [Al(H 2 O) 6 ] 3+ and H 2 O 2 , through hydrogen bonds,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f37e39c1dc8617b919d2d56bc0c9ccdb
https://doi.org/10.1016/j.molcata.2009.04.005

Synthese, Röntgenstrukturanalyse und katalytische Aktivität neuer Erdalkalimetall-Alkinkomplexe

Autor: Herbert Schumann, Markus Hummert, Alexandra Steffens

Publikováno v: Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie
Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, Wiley-VCH Verlag, 2009, 635 (6-7), pp.1041. ⟨10.1002/zaac.200900159⟩

Synthesis, X-ray Structures and Catalytic Activity of New Alkyne Complexes of the Alkaline Earth Metals Mg[N(SiMe3)2]2(THF)2 (1) reacts with equal amounts of HC≡CPh and HC≡CSiMe3 in THF yielding [(Me3Si)2NMgC≡CPh(THF)]2 (2) and [(Me3Si)2NMgC≡

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::057b151c46c6213f9c0463b023d7d1f4
https://doi.org/10.1002/zaac.200900159

Synthesis, molecular structure and magnetic properties of a rhenium(IV) compound with catechol

Autor: Raúl Chiozzone, V. Pintos, Herbert Schumann, L. Geis, Markus Hummert, Carlos Kremer, Alicia Cuevas, Joaquín Sanchiz

Publikováno v: Journal of Molecular Structure. 921:80-84

A novel Re(IV) complex containing catechol as ligand has been prepared and characterized. The crystal structure of (HNEt3)(NBu4)[ReCl4(cat)]·H2cat was determined. The rhenium ion presents a distorted octahedral geometry, being bonded to a bidentate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0acfa456891769dc8954e5941f70efa6
https://doi.org/10.1016/j.molstruc.2008.12.031