scispace - formally typeset
Search or ask a question

Showing papers by "Frank Girgsdies published in 2001"

Journal Article•DOI•
Synthesis and Characterization of (−)-1-Menthyl-4,7-dimethylindene and Its Main Group Metal Compounds with Lithium, Sodium, Potassium, and Tin

[...]

Herbert Schumann1, and Oleg Stenzel1, Frank Girgsdies1, Ronald L. Halterman2•
Technical University of Berlin1, University of Oklahoma2
31 Mar 2001-Organometallics
TL;DR: In this paper, a cross-coupling reaction of menthylzinc with 3-(4,7-dimethylindenyl) trifluoromethanesulfonate or 3-( 4,7)-diisopropyl-3-menthylindene was demonstrated.

31 citations

Journal Article•DOI•
Formation and Structure of Thulium(III) Cyclopentadienides as Products of Reactions Directed Towards the Synthesis of Thulium(II) Cyclopentadienides

[...]

Igor L. Fedushkin1, Frank Girgsdies, Herbert Schumann, Mikhail N. Bochkarev1•
Russian Academy of Sciences1
01 Sep 2001-European Journal of Inorganic Chemistry

27 citations

Journal Article•DOI•
Synthesis, structure and magnetic properties of Mn(II) and Cu(II) complexes with the dicyano-acetic acid methyl ester anion

[...]

Carlos Kremer1, Cecilia Melián1, Julia Torres1, Marı́a P Juanicó1, Claudia Lamas1, Horacio Pezaroglo1, Eduardo Manta1, Herbert Schumann2, Joachim Pickardt2, Frank Girgsdies2, Oscar N. Ventura1, Francesc Lloret3 •
University of the Republic1, Technical University of Berlin2, University of Valencia3
19 Mar 2001-Inorganica Chimica Acta
TL;DR: In this paper, the preparation of the sodium salt of dicyano-acetic acid methyl ester (NaCH 3 OC(O)C(CN) 2 ) (NaL) is reported.

23 citations

Journal Article•DOI•
Menthyl-Functionalized Chiral Nonracemic Monoindenyl Complexes of Rhodium, Iridium, Cobalt, and Molybdenum

[...]

Herbert Schumann1, O. Stenzel1, and Sebastian Dechert1, Frank Girgsdies1, Ronald L. Halterman2 •
Technical University of Berlin1, University of Oklahoma2
01 May 2001-Organometallics
TL;DR: Optically active complexes of Rh, Ir, Co, and Mo containing the chiral, menthyl-substituted indenyl ligands (−)-3-menthyl, 4,7-dimethylindene, (−)-4-7-diisopropyl-3-enthylindene and (+)-3neomenth...

18 citations

Journal Article•DOI•
(−)-2-Menthylindenyl and (−)-2-Menthyl-4,7-dimethylindenyl Complexes of Rhodium, Iridium, Cobalt, and Molybdenum

[...]

Herbert Schumann1, O. Stenzel1, and Sebastian Dechert1, Frank Girgsdies1, Ronald L. Halterman2 •
Technical University of Berlin1, University of Oklahoma2
13 Nov 2001-Organometallics
TL;DR: Optically active complexes of Rh, Ir, Co, and Mo containing the chiral, menthyl-substituted indenyl ligands (−)-2-menthylindene and (−)- 2-MENTHyl-4,7-dimethylindene are described in this article.

17 citations

Journal Article•DOI•
Intramolekular schwefelstabilisierte Aluminium‐ und Galliumalkyle

[...]

Herbert Schumann, Birgit C. Wassermann, Bernd Heymer, Markus R. Keitsch, Frank Girgsdies 
01 Aug 2001-Zeitschrift für anorganische und allgemeine Chemie
Abstract: Die intramolekular schwefelstabilisierten Organoaluminium- und Organogalliumverbindungen Me2Al(CH2)3SEt (1), Me2Ga(CH2)3SEt (2), MeClAl(CH2)3SEt (3), MeClGa(CH2)3SEt (4), Cl2Al(CH2)3SEt (5) und Cl2Ga(CH2)3SEt (6) werden aus Me2MCl, MeMCl2 bzw. MCl3 (M = Al, Ga) und ClMg(CH2)3SEt erhalten. Bei der Umsetzung von 5 bzw. 6 mit BrMg(CH2)5MgBr entstehen (CH2)5Al(CH2)3SEt (7) und (CH2)5Ga(CH2)3SEt (8). AlCl3 bzw. GaCl3 reagieren mit zwei bzw. drei Aquivalenten ClMg(CH2)3SEt unter Bildung von ClAl[(CH2)3SEt]2 (9) und ClGa[(CH2)3SEt]2 (10) bzw. Al[(CH2)3SEt]3 (11) und Ga[(CH2)3SEt]3 (12). Diese Verbindungen wurden durch Elementaranalysen, Massenspektren, 1H-, 13C- und 27Al-NMR-Untersuchungen sowie 6 durch Einkristall-Rontgenstrukturanalyse charakterisiert. Intramolecularly Sulfur stabilized Aluminum and Gallium Alkyl Derivatives The intramolecularly sulfur stabilized organoaluminum and organogallium compounds Me2Al(CH2)3SEt (1), Me2Ga(CH2)3SEt (2), MeClAl(CH2)3SEt (3), MeClGa(CH2)3SEt (4), Cl2Al(CH2)3SEt (5), and Cl2Ga(CH2)3SEt (6) are synthesized from Me2MCl, MeMCl2, and MCl3 (M = Al, Ga), respectively, and ClMg(CH2)3SEt. The reaction of 5 and of 6 with BrMg(CH2)5MgBr yields (CH2)5Al(CH2)3SEt (7) and (CH2)5Ga(CH2)3SEt (8), respectively. AlCl3 and GaCl3 react with two as well as three equivalents of ClMg(CH2)3SEt forming ClAl[(CH2)3SEt]2 (9) and ClGa[(CH2)3SEt]2 (10) as well as Al[(CH2)3SEt]3 (11) and Ga[(CH2)3SEt]3 (12), respectively. The compounds were characterized by elemental analyses, mass spectroscopy, 1H, 13C, and 27Al NMR investigations as well as 6 by single crystal X-ray structure analysis.

10 citations

Journal Article•DOI•
Synthese und Charakterisierung chiraler Organogallium- und -aluminiumalkoholate mit intramolekularer Stickstoffstabilisierung. Röntgenstrukturanalyse von Dimethylgallium-(S)-2-dimethylamino-3-methyl-1-butanolat, Dimethylgallium-(S)-2-dimethylamino-3-phenyl-1-propanolat und Dimethylgallium-(R)-2-dimethylamino-1-butanolat

[...]

Herbert Schumann1, Sonja Wernik1, Birgit C. Wassermann1, Frank Girgsdies1•
Technical University of Berlin1
01 Mar 2001-Journal of Organometallic Chemistry
TL;DR: In this paper, the reactions of trimethylgallium and trimethylaluminium with optically active alcohols yield [Me2GaOCH2CHRNMe2]2 [R=Me (S) 6, iPr (S), iBu (S).

10 citations