Search Results - "Spek, A.L."

Triruthenium dodecacarbonyl/triphenylphosphine catalyzed dehydrogenation of primary and secondary alcohols by Meijer, R.H, Ligthart, G.B.W.L, Meuldijk, J, Vekemans, J.A.J.M, Hulshof, L.A, Mills, A.M, Kooijman, H, Spek, A.L

“…Dehydrogenation of alcohols into aldehydes and ketones by Ru 3(CO) 12/PPh 3 based homogeneous catalysis has been investigated as an alternative for the…”
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Synthesis, characterization and reactivity of ionic palladium(II) complexes containing bidentate nitrogen ligands in a unidentate coordination mode by Groen, J.H., de Jong, B.J., Ernsting, J.-M., van Leeuwen, P.W.N.M., Vrieze, K., Smeets, W.J.J., Spek, A.L.

“…The novel ionic complexes [Pd(Me)( p-An-BIAN)(LL)]SO 3CF 3 (LL= p-An-BIAN (bis(anisylimino)acenaphthene) ( 1a), phen ( 2a), dmphen ( 3a), dppe ( 4a), dppp (…”
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Self-assembled biomimetic [2Fe2S]-hydrogenase-based photocatalyst for molecular hydrogen evolution by Kluwer, A.M, Kapre, R, Hartl, F, Lutz, M, Spek, A.L, Brouwer, A.M, van Leeuwen, P.W.N.M, Reek, J.N.H

“…The large-scale production of clean energy is one of the major challenges society is currently facing. Molecular hydrogen is envisaged as a key green fuel for…”
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Unusual conformational aspects of some novel chiral non-racemic pyridinyl-2-phosphonates by Dros, A.C., Zijlstra, R.W.J., Van Duijnen, P.Th, Spek, A.L., Kooijman, H., Kellogg, R.M.

“…Reaction of pyridinyl-2-phosphonyl dichloride ( 6) with 1-phenyl-2,2-dimethylpropane-1,3-diol ( 9) leads to the two epimeric…”
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Cyclic Bis-Urea Compounds as Gelators for Organic Solvents by van Esch, Jan H., Schoonbeek, Franck, de Loos, Maaike, Kooijman, Huub, Spek, Anthony L., Kellogg, Richard M., Feringa, Ben L.

“…Self‐assembly of cyclic bis‐urea compounds takes place even at low concentrations to form very thin fibers which give a three‐dimensional network in the…”
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Ureidobenzotriazine Multiple H-Bonding Arrays:  The Importance of Geometrical Details on the Stability of H-Bonds by Ligthart, G. B. W. L, Guo, Dawei, Spek, A. L, Kooijman, Huub, Zuilhof, Han, Sijbesma, Rint P

“…A 3-ureidobenzo-1,2,4-triazine 1-N-oxide (1) was synthesized successfully. The derivative displays an acceptor−donor−acceptor−acceptor (ADAA) hydrogen-bonding…”
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Reliable determination of absolute structure using small Bijvoet differences by Hooft, R.W.W., Straver, L.H., Spek, A.L.

“…Abstract only…”
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Effect of Acyl Chain Length and Branching on the Enantioselectivity of Candida rugosa Lipase in the Kinetic Resolution of 4-(2-Difluoromethoxyphenyl)-Substituted 1,4-Dihydropyridine 3,5-Diesters by SOBOLEV, Arkadij, FRANSSEN, Maurice C. R., VIGANTE, Brigita, CEKAVICUS, Brigita, ZHALUBOVSKIS, Raivis, KOOIJMAN, Huub, SPEK, Anthony L., DUBURS, Gunars, DE GROOT, Aede

“…Since 2,6-dimethyl-4-aryl-1,4-dihydropyridine 3,5-diesters themselves are not hydrolyzed by commercially available hydrolases, derivatives with spacers…”
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A novel ruthenium carbene dimer that is active in the metathesis of internal alkenes; the crystal structure of Ru2(CHPh)2(CF3CO2)2(μ-CF3CO2)2(PCy3)2(μ-H2O) by Buchowicz, W., Mol, J.C., Lutz, M., Spek, A.L.

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A hydrogen atom in an organoplatinum-amine system. 1. Synthesis and spectroscopic and crystallographic characterization of novel zwitterionic complexes with a Pt(II)[sup [minus]][center dot][center dot][center dot]H-N[sup +] unit by Wehman-Ooyevaar, I.C.M., Grove, D.M., Kooijman, H., Sluis, P. van der, Spek, A.L., Koten, G. van

“…The unusual bridging-hydrogen complexes PtX(L-C,N)(LH-C,H) containing a zwitterionic Pt(II)[sup [minus]][center dot][center dot][center dot]H-N[sup +] moiety…”
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A dinuclear copper(II) macrocyclic pyrazole compound catalyses the oxidative polymerisation of 2,6-dimethylphenol by Driessen, W.L., Baesjou, P.J., Bol, J.E., Kooijman, H., Spek, A.L., Reedijk, J.

“…The single crystal X-ray structure of the compound [Cu 2(EtPy24Pz)(NO 3) 2](NO 3) 2(H 2O) 7, with EtPy24Pz is…”
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A novel ruthenium carbene dimer that is active in the metathesis of internal alkenes; the crystal structure of Ru 2(CHPh) 2(CF 3CO 2) 2(μ-CF 3CO 2) 2(PCy 3) 2(μ-H 2O) by Buchowicz, W., Mol, J.C., Lutz, M., Spek, A.L.

“…The reaction of Ru(CHPh)Cl 2(PCy 3) 2 ( 1) with two equivalents of CF 3CO 2Ag gives Ru 2(CHPh) 2(CF 3CO 2) 2(μ-CF 3CO 2) 2(PCy 3) 2(μ-H 2O) ( 2) in high…”
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Structure of aqua-bis(ethylenediamine)copper(II) bis(2,6-dimethylphenolate) by Baesjou, P.J, Driessen, W.L, Reedijk, J, Spek, A.L

“…The single-crystal X-ray structure of [Cu(en) 2(H 2O)](dmp) 2 (en=1,2-diaminoethane and dmp=2,6-dimethylphenolate) shows the copper(II) ion in a quite regular…”
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Insertion reactions into palladium–carbon bonds of complexes containing new rigid bidentate nitrogen ligands by Groen, J.H., Vlaar, M.J.M., van Leeuwen, P.W.N.M., Vrieze, K., Kooijman, H., Spek, A.L.

“…The neutral complexes Pd(Me)Cl(DPIA) ( 3) and Pd(Me)Cl(DQIA) ( 4), containing the novel rigid bidentate nitrogen ligands…”
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Three dinuclear copper(II) carboxylates with the paddle-wheel cage structure as intermediates in copper(II) catalyzed oxidations of carboxylic acids. X-ray crystal structures of [tetrakis(diphenyl acetato- μ- O, O′)bis(acetonitrile- N)dicopper(II)] tetrakis(acetonitrile), [ [formula omitted]] and [tetrakis(1-phenyl-1-carboxylato- μ- O, O′- cyclopentane)-bis(ethanol- O)dicopper(II)] bis (ethanol) by Agterberg, F.P.W., ProvóKluit, H.A.J., Driessen, W.L., Reedijk, J., Oevering, H., Buijs, W., Veldman, N., Lakin, M.T., Spek, A.L.

“…The synthesis spectroscopic magnetic and structural characterization of three new dinuclear copper(II) carboxylates are described. All compounds exhibit the…”
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Structure of the luminescent Ca 4K 2(CrO 4) 5 · 2H 2O crystal by Spek, A.L., Duisenberg, A.J.M., Coremans, C.J.M., van der Waals, J.H.

“…Chromate crystals with the composition Ca 4K 2(CrO 4) 5 · 2H 2O have been identified which under UV excitation show luminescence with a lifetime of the order…”
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Lipase-mediated resolution of octahydro-3,3,8a-trimethyl-1-naphthalenol, a key intermediate in the total synthesis of lactaranes and marasmanes by Franssen, Maurice C.R., Jongejan, Hugo, Kooijman, Huub, Spek, Anthony L., Bell, Roel P.L., Wijnberg, Joannes B.P.A., de Groot, Aede

“…The bicyclic alcohol (1α,8aα)-1,2,3,4,6,7,8,8a-octahydro-3,3,8a-trimethyl-1-naphthalenol (±)- 1 was resolved using Candida rugosa lipase-mediated…”
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Efficient synthesis and molecular structure of 2-hydroxyisophthaldehyde by Zondervan, C, Beuken, E.K., van den, Kooijman, H, Spek, A.L, Feringa, B.L

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Structure of the luminescent Ca4K2(CrO4)5 · 2H2O crystal by Spek, A.L., Duisenberg, A.J.M., Coremans, C.J.M., van der Waals, J.H.

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Monocyclopentadienylzirconium and -hafnium alkyls: Synthesis, hydrogen-transfer reactions, and catalytic features in the reactivity with. alpha. -olefins. X-ray structure of CpZr(. eta. sup 4 -butadiene)(dmpe)Cl (dmpe = 1,2,bis(dimethylphosphino)ethane) by Wielstra, Y., Gambarotta, S., Spek, A.L.

“…The dissociation of one of the two equatorial dmpe (dmpe = 1,2-bis(dimethylphosphino)ethane) of CpM(dmpe){sub 2}X (X = Cl (1), Me (2); M = Zr (a), Hf (b)),…”
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