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Showing 1 to 12 of 146 entries
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Generation of Dicoordinate Boron(I) Units by Fragmentation of a Tetra-Boron(I) Molecular Square.

Angewandte Chemie (International ed. in English)

Arrowsmith M, Auerhammer D, Bertermann R, Braunschweig H, Bringmann G, Celik MA, Dewhurst RD, Finze M, Grüne M, Hailmann M, Hertle T, Krummenacher I.
PMID: 27730749
Angew Chem Int Ed Engl. 2016 Nov 07;55(46):14464-14468. doi: 10.1002/anie.201608429. Epub 2016 Oct 12.

Reduction of carbene-borane adduct [(cAAC)BBr

Nitrogen fixation and reduction at boron.

Science (New York, N.Y.)

Légaré MA, Bélanger-Chabot G, Dewhurst RD, Welz E, Krummenacher I, Engels B, Braunschweig H.
PMID: 29472479
Science. 2018 Feb 23;359(6378):896-900. doi: 10.1126/science.aaq1684.

Currently, the only compounds known to support fixation and functionalization of dinitrogen (N

Computational Metabolomics Operations at BioCyc.org.

Metabolites

Karp PD, Billington R, Holland TA, Kothari A, Krummenacker M, Weaver D, Latendresse M, Paley S.
PMID: 26011592
Metabolites. 2015 May 22;5(2):291-310. doi: 10.3390/metabo5020291.

BioCyc.org is a genome and metabolic pathway web portal covering 5500 organisms, including Homo sapiens, Arabidopsis thaliana, Saccharomyces cerevisiae and Escherichia coli. These organism-specific databases have undergone variable degrees of curation. The EcoCyc (Escherichia coli Encyclopedia) database is the...

Isolation of a neutral boron-containing radical stabilized by a cyclic (alkyl)(amino)carbene.

Angewandte Chemie (International ed. in English)

Bissinger P, Braunschweig H, Damme A, Krummenacher I, Phukan AK, Radacki K, Sugawara S.
PMID: 24917474
Angew Chem Int Ed Engl. 2014 Jul 07;53(28):7360-3. doi: 10.1002/anie.201403514. Epub 2014 Jun 10.

Utilizing a cyclic (alkyl)(amino)carbene (CAAC) as a ligand, neutral CAAC-stabilized radicals containing a boryl functionality could be prepared by reduction of the corresponding haloborane adducts. The radical species with a duryl substituent was fully characterized by single-crystal X-ray structural...

A theoretical study of the aromaticity in neutral and anionic borole compounds.

Dalton transactions (Cambridge, England : 2003)

Jimenez-Halla JO, Matito E, Solà M, Braunschweig H, Hörl C, Krummenacher I, Wahler J.
PMID: 25494445
Dalton Trans. 2015 Apr 21;44(15):6740-7. doi: 10.1039/c4dt03445g.

In this contribution, we have evaluated the (anti)aromatic character of thirty-four different borole compounds in their neutral and reduced states based on two aromaticity indices, namely nucleus-independent chemical shift (NICS) and multicenter indices (MCI), calculated at the PBE0/6-31+G(d,p) level...

Isomerization polymerization of the phosphaalkene MesP=CPh2: an alternative microstructure for poly(methylenephosphine)s.

Angewandte Chemie (International ed. in English)

Siu PW, Serin SC, Krummenacher I, Hey TW, Gates DP.
PMID: 23740733
Angew Chem Int Ed Engl. 2013 Jul 01;52(27):6967-70. doi: 10.1002/anie.201301881. Epub 2013 Jun 05.

No abstract available.

Ansa-Complexes of [Mn(η(5) -C5 H5 )(η(6) -C6 H6 )]: Preparation, Characterization, and Reactivity of [n]Manganoarenophanes (n=1, 2, 3).

Chemistry (Weinheim an der Bergstrasse, Germany)

Braunschweig H, Damme A, Dück K, Fuß M, Hörl C, Kramer T, Krummenacher I, Kupfer T, Paprocki V, Schneider C.
PMID: 26387512
Chemistry. 2015 Oct 12;21(42):14797-803. doi: 10.1002/chem.201502161. Epub 2015 Aug 31.

We report the synthesis of [n]manganoarenophanes (n=1, 2) featuring boron, silicon, germanium, and tin as ansa-bridging elements. Their preparation was achieved by salt-elimination reactions of the dilithiated precursor [Mn(η(5) -C5 H4 Li)(η(6) -C6 H5 Li)]⋅pmdta (pmdta=N,N,N',N',N''-pentamethyldiethylenetriamine) with corresponding element...

Aminotroponiminates as tunable, redox-active ligands: reversible single electron transfer and reductive dimerisation.

Chemical communications (Cambridge, England)

Lichtenberg C, Krummenacher I.
PMID: 27452905
Chem Commun (Camb). 2016 Aug 21;52(65):10044-7. doi: 10.1039/c6cc05762d. Epub 2016 Jul 25.

Aminotroponiminates (atis) are shown to be redox-active ligands. Under strongly reducing conditions, the result of electron transfer can be controlled by the choice of the metal bound to the ati ligand. Either reversible electron transfer or a reductively induced...

Multidentate ligand systems featuring dual functionality.

Dalton transactions (Cambridge, England : 2003)

Kuzu I, Krummenacher I, Meyer J, Armbruster F, Breher F.
PMID: 19082036
Dalton Trans. 2008 Nov 21;(43):5836-65. doi: 10.1039/b808347a. Epub 2008 Oct 01.

Multifunctional ligands with podand topology provide intrinsically well-defined coordination geometries. Several subgroups of multidentate ligand systems comprising dual functionality have been developed so far. Recent advances made in this research area reflect its topicality. Work on metal complexes of...

Coinage metal complexes of tris(pyrazolyl)methanide [C(3,5-Me2pz)3]-: kappa3-coordination vs. backbone functionalisation.

Dalton transactions (Cambridge, England : 2003)

Krummenacher I, Rüegger H, Breher F.
PMID: 16474893
Dalton Trans. 2006 Feb 28;(8):1073-81. doi: 10.1039/b512309g. Epub 2005 Nov 28.

Tris(pyrazolyl)methanides, [C(3,5-R2pz)3]-, contain an unassociated tetrahedral carbanionic centre in the bridgehead position. In addition to nitrogen donor centres for transition metal coordination, an accessible reactive site for further manipulations is available in the backbone of the ligand. The coordination...

Synthesis, coordination behavior, and reduction chemistry of cymantrenyl-1,3-bis(2,3,4,5-tetraphenyl)borole.

Chemistry (Weinheim an der Bergstrasse, Germany)

Braunschweig H, Damme A, Gamon D, Kelch H, Krummenacher I, Kupfer T, Radacki K.
PMID: 22639411
Chemistry. 2012 Jul 02;18(27):8430-6. doi: 10.1002/chem.201200284. Epub 2012 May 25.

We describe the synthesis of base-free bisborole [Cym(†)(BC(4)Ph(4))(2)]-Cym(†)=(OC)(3)Mn(η(5)-C(5)H(3))-and its transformation into two fully characterized Lewis acid-base adducts with pyridine bases of the type 4-R-NC(5)H(4) (R=tBu, NMe(2)). The results of electrochemical, as well as NMR and UV/Vis spectroscopic studies on...

Construction and completion of flux balance models from pathway databases.

Bioinformatics (Oxford, England)

Latendresse M, Krummenacker M, Trupp M, Karp PD.
PMID: 22262672
Bioinformatics. 2012 Feb 01;28(3):388-96. doi: 10.1093/bioinformatics/btr681. Epub 2012 Jan 18.

MOTIVATION: Flux balance analysis (FBA) is a well-known technique for genome-scale modeling of metabolic flux. Typically, an FBA formulation requires the accurate specification of four sets: biochemical reactions, biomass metabolites, nutrients and secreted metabolites. The development of FBA models...

Showing 1 to 12 of 146 entries