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Synthesis and structural characterization of functionalized dimeric aluminophosphonates and a monomeric gallophosphonate anion.

Inorganic chemistry

Chakraborty D, Horchler S, Krätzner R, Varkey SP, Pinkas J, Roesky HW, Usón I, Noltemeyer M, Schmidt HG.
PMID: 11350243
Inorg Chem. 2001 May 21;40(11):2620-4. doi: 10.1021/ic000797v.

Reaction of t-BuP(O)(OSiMe(3))(OH) with Me(3)Al leads to the formation of [Me(2)Al(mu-O)(2)P(OSiMe(3))(t-Bu)](2) (1) whereas Me(2)AlCl reacts with Ph(2)P(O)(OH) to yield [(Cl)(Me)Al(mu-O)(2)PPh(2)](2) (2). These compounds represent the first examples of functionalized dimeric four-ring type aluminophosphonate systems. The double four-ring type gallophosphonate,...

A Facile Route to Group 13 Difluorodiorganometalates:.

Angewandte Chemie (International ed. in English)

Roesky HW, Stasch A, Hatop H, Rennekamp C, H Hamilton D, Noltemeyer M, Schmidt HG.
PMID: 10649364
Angew Chem Int Ed Engl. 2000 Jan;39(1):171-173.

A facile synthesis utilizing tetra-n-butylammonium hydrogen difluoride and Group 13 alkyl compounds leads to the soluble salts 1 - 4. Compound 1 is the smallest difluoro-diorganoaluminate so far characterized. The corresponding gallium and indium derivatives 3 and 4 are...

Organometallic Fluorides of Zirconium and Hafnium in the Synthesis of Carboxylate Complexes: Molecular Structures of [{(eta(5)-C(5)Me(5))ZrF(OCOCF(3))(2)}(2)] and [(eta(5)-C(5)Me(5))(2)Zr(OCOCF(3))(2)].

Inorganic chemistry

Dorn H, Shah SA, Parisini E, Noltemeyer M, Schmidt HG, Roesky HW.
PMID: 11666903
Inorg Chem. 1996 Nov 20;35(24):7181-7184. doi: 10.1021/ic9604977.

The reaction of [(eta(5)-C(5)Me(5))ZrF(3)] and [(eta(5)-C(5)Me(5))HfF(3)] with Me(3)SiOCOCF(3) yields the dinuclear complexes [{(eta(5)-C(5)Me(5))ZrF(OCOCF(3))(2)}(2)] (1) and [{(eta(5)-C(5)Me(5))HfF(OCOCF(3))(2)}(2)] (2), regardless of the molar ratio employed. [(eta(5)-C(5)Me(5))(2)ZrF(2)] reacts with 1 and 2 equiv of Me(3)SiOCOCF(3) to form the mononuclear compounds [(eta(5)-C(5)Me(5))(2)Zr(OCOCF(3))(2)] (3)...

Synthesis and characterization of HC[C(Me)N(C(6)H(3)-2,6-i-Pr(2))](2)MX(2) (M = Al, X = Cl, I; M = Ga, In, X = Me, Cl, I): sterically encumbered beta-diketiminate group 13 metal derivatives.

Inorganic chemistry

Stender M, Eichler BE, Hardman NJ, Power PP, Prust J, Noltemeyer M, Roesky HW.
PMID: 11375697
Inorg Chem. 2001 Jun 04;40(12):2794-9. doi: 10.1021/ic001311d.

A series of group 13 metal complexes featuring the beta-diketiminate ligand [[(C(6)H(3)-2,6-i-Pr(2))NC(Me)](2)CH](-) (i.e., [Dipp(2)nacnac](-), Dipp = C(6)H(3)-2,6-i-Pr(2)) have been prepared and spectroscopically and structurally characterized. The chloride derivatives Dipp(2)nacnacMCl(2) (M = Al (3), Ga (5), In (8)) were isolated...

First Mixed Fluoro-Chloro Group 4 Organometallics: Synthesis and Spectroscopic and Structural Characterization of [{(C(5)Me(5))ZrF(2)Cl}(4)], [{(C(5)Me(5))HfF(2)Cl}(4)], [(C(5)Me(5))(4)Zr(4)(&mgr;-F)(2)(&mgr;-F(2))(2)(&mgr;-Cl)(2)Cl(4)], [(C(5)Me(5))(4)Hf(4)(&mgr;-F)(2)(&mgr;-F(2))(2)(&mgr;-Cl)(2)Cl(4)], [(C(5)Me(4)Et)(2)ZrClF], and [(C(5)Me(5))(2)HfClF].

Inorganic chemistry

Murphy EF, Lübben T, Herzog A, Roesky HW, Demsar A, Noltemeyer M, Schmidt HG.
PMID: 11666158
Inorg Chem. 1996 Jan 03;35(1):23-29. doi: 10.1021/ic950822a.

Tetrameric [{(C(5)Me(5))MF(3)}(4)] (M = Zr, Hf) react smoothly with Me(3)SiCl in CH(2)Cl(2) at room temperature to give [{(C(5)Me(5))ZrF(2)Cl}(4)] (1) and [{(C(5)Me(5))HfF(2)Cl}(4)] (2), respectively, in high yield. Treatment of [{(C(5)Me(5))MF(3)}(4)] (M = Zr, Hf) with Me(2)AlCl in toluene gives mixtures...

Organotitanoxanes [C(5)Me(5)TiMe(2)](2)(mu-O) and [(C(5)Me(5)(4)Ti(4)Me(2)](mu-O)(5): synthesis and crystal structures.

Inorganic chemistry

Varkey SP, Schormann M, Pape T, Roesky HW, Noltemeyer M, Herbst-Irmer R, Schmidt HG.
PMID: 11327924
Inorg Chem. 2001 May 07;40(10):2427-9. doi: 10.1021/ic0013072.

No abstract available.

Aluminacyclopropene: syntheses, characterization, and reactivity toward terminal alkynes.

Journal of the American Chemical Society

Zhu H, Oswald RB, Fan H, Roesky HW, Ma Q, Yang Z, Schmidt HG, Noltemeyer M, Starke K, Hosmane NS.
PMID: 16608344
J Am Chem Soc. 2006 Apr 19;128(15):5100-8. doi: 10.1021/ja057731p.

Reactions of LAl with ethyne, mono- and disubstituted alkynes, and diyne to aluminacyclopropene LAl[eta2-C2(R1)(R2)] ((L = HC[(CMe)(NAr)]2, Ar = 2,6-iPr2C6H3); R1 = R2 = H, (1); R1 = H, R2 = Ph, (2); R1 = R2 = Me, (3);...

Synthesis of an aluminum spirocyclic hybrid with an inorganic B2O3 and an organic C3N2 core.

Journal of the American Chemical Society

Yang Z, Ma X, Oswald RB, Roesky HW, Noltemeyer M.
PMID: 16984177
J Am Chem Soc. 2006 Sep 27;128(38):12406-7. doi: 10.1021/ja064035w.

The reaction of LAl (L = HC(CMeNAr)2, Ar = 2,6-iPr2C6H3) or LAlH2 with PhB(OH)2 yields the unprecedented spirocyclic LAl[(OBPh)2O] compound. The former reaction proceeds under hydrogen formation and simultaneous oxidation of the aluminum(I).

Mononuclear aluminum hydroxide for the design of well-defined homogeneous catalysts.

Journal of the American Chemical Society

Bai G, Singh S, Roesky HW, Noltemeyer M, Schmidt HG.
PMID: 15755164
J Am Chem Soc. 2005 Mar 16;127(10):3449-55. doi: 10.1021/ja043585w.

An unprecedented aluminum hydroxide LAlMe(OH) (5; L = HC[(CMe)(2,6-iPr2C6H3N)]2) has been prepared by the hydrolysis of LAlMeCl (4). For the preparation of 5, the reagents of KOH, water, and KH, as well as the two-phase ammonia/toluene system, were used....

Ultrafast intramolecular charge transfer and internal conversion with tetrafluoro-aminobenzonitriles.

Chemphyschem : a European journal of chemical physics and physical chemistry

Galievsky VA, Druzhinin SI, Demeter A, Jiang YB, Kovalenko SA, Pérez Lustres L, Venugopal K, Ernsting NP, Allonas X, Noltemeyer M, Machinek R, Zachariasse KA.
PMID: 16273565
Chemphyschem. 2005 Nov 11;6(11):2307-23. doi: 10.1002/cphc.200500267.

The five 2,3,5,6-tetrafluoro-4-aminobenzonitriles XABN4F with a dimethyl-amino (DMABN4F), diethyl-amino (DEABN4F), azetidinyl (AZABN4F), methyl-amino (MABN4F) or amino (ABN4F) group undergo ultrafast intramolecular charge transfer (ICT) at room temperature, in the polar solvent acetonitrile (MeCN) as well as in the nonpolar...

Pseudohelical and helical primary structures of 1,2-spiroannelated four- and five-membered rings: syntheses and chiroptical properties.

The Journal of organic chemistry

Widjaja T, Fitjer L, Pal A, Schmidt HG, Noltemeyer M, Diedrich C, Grimme S.
PMID: 17973532
J Org Chem. 2007 Nov 23;72(24):9264-77. doi: 10.1021/jo7017558. Epub 2007 Nov 01.

The pseudohelical hydrocarbons (R)-6, (S)-7, and (R)-8 and the helical hydrocarbon (P)-9, formally derived from the helical hydrocarbon (P)-4 by stepwise replacement of each of the four-membered rings by a five-membered ring, have been prepared. Their optical rotations vary...

[Zn.

Angewandte Chemie (International ed. in English)

Yang Y, Pinkas J, Noltemeyer M, Schmidt HG, Roesky HW.
PMID: 29711560
Angew Chem Int Ed Engl. 1999 Mar 01;38(5):664-666. doi: 10.1002/(SICI)1521-3773(19990301)38:5<664::AID-ANIE664>3.0.CO;2-4.

The largest multinuclear zinc framework synthesized is in the title compound (see picture), which contains structural features closely related to the motifs found in layered and three-dimensional zincophosphates and zincophosphonates. The reactive centers make this zincophosphonate a viable precursor...

Showing 1 to 12 of 71 entries