Výsledky vyhledávání - "Linette, Twigge"

103Rh NMR shifts of RhI-β-diketonato and RhI-β-aminoketonato complexes influenced by different substituents

Autor: Jannie C. Swarts, Jeanet Conradie, Linette Twigge

Publikováno v: Polyhedron. 169:14-23

103Rh, 1H and 31P NMR data of [Rh(β-diketonato)(CO)(PPh3)], [Rh(CH3COCHC(NR2)CH3)(CO)(PPh3)] and [Rh(β-diketonato)(COD)] complexes with β-diketonato = RCOCHCOR1 and R and/or R1 = H, CH3, ferrocenyl, phenyl, CF3, thienyl and for the β-aminoketonat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f69f45804d241b1fc9604b574be3b9f1
https://doi.org/10.1016/j.poly.2019.04.052

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First kinetic data of the CO substitution in fac-[Re(L,L′-Bid)(CO)3(X)] complexes (L,L′-Bid = acacetylacetonate or tropolonate) by tertiary phosphines PTA and PPh3: Synthesis and crystal structures of water-soluble rhenium(I) tri- and dicarbonyl complexes with 1,3,5-triaza-7-phosphaadamantane (PTA)

Autor: Amanda-Lee Manicum, Andreas Roodt, Hendrik G. Visser, Linette Twigge, Marietjie Schutte-Smith, Orbett T. Alexander

Publikováno v: Inorganic Chemistry Communications. 101:93-98

fac-[Re(OH2)3(CO)3]+ reacts with acetylacetone (AcacH) at room temperature to yield fac-[Re(Acac)(CO)3(OH2)] (1) under aqueous conditions 1 was isolated and reacted with the monodentate ligand, 1,3,5-triaza-7-phosphaadamantane (PTA), to form fac-[Re(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::26337801a2f9d812c8795d221b7a7bf5
https://doi.org/10.1016/j.inoche.2019.01.014

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Dynamics of Soil Carbon Concentrations and Quality Induced by Agricultural Land Use in Central South Africa

Autor: E. Kotzé, P. F. Loke, C. C. du Preez, Linette Twigge

Publikováno v: Soil Science Society of America Journal. 83:366-379

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::631631ad43a4423700834ca54b53f447
https://doi.org/10.2136/sssaj2018.11.0423

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Silica Nanopowder Supported Frustrated Lewis Pairs for CO

Autor: Kgauhelo, Mentoor, Linette, Twigge, J W Hans, Niemantsverdriet, Jannie C, Swarts, Elizabeth, Erasmus

Publikováno v: Inorganic chemistry. 60(1)

Treatment of hydroxylated silica nanopowders

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::84731246d36981d7430365bbba2dce49
https://pubmed.ncbi.nlm.nih.gov/33351611

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Synthesis, characterization and cytotoxic evaluation of chalcone derivatives

Autor: Linette Twigge, Susanna L. Bonnet, Hendrik G. Visser, Tereza Stenclova, Lucie Rárová, Anke Wilhelm, Marietjie Schutte-Smith

Publikováno v: Journal of Molecular Structure. 1251:132001

Four chalcones, (E)-3-(3-hydroxyphenyl)-1-phenylprop-2-en-1-one (A), (E)-3-(4-hydroxyphenyl)-1-phenylprop-2-en-1-one (B), (E)-3-(4-hydroxyphenyl)-1-(4-methoxyphenyl)prop-2-en-1-one (C) and (E)-3-(4-bromophenyl)-1-(4-methoxyphenyl)prop-2-en-1-one (D),

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc93ea531248c8778a26910a1660aedc
https://doi.org/10.1016/j.molstruc.2021.132001

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A variable temperature NMR analysis and resonance assignment of the Grubbs second generation catalyst

Autor: Charlene Marais, Barend C. B. Bezuidenhoudt, Marthinus Rudi Swart, Linette Twigge

Publikováno v: Polyhedron. 152:31-36

The Grubbs second generation catalyst [RuCl2(PCy3)(H2IMes)CHPh] was analysed in solution in order to identify and assign all of the 1H and 13C NMR resonances. This was achieved through utilizing various 2D NMR techniques and by acquiring spectra at a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d77fc94701e20a9e8e26211359f83f51
https://doi.org/10.1016/j.poly.2018.06.024

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Rhodium(triphenylphosphine)carbonyl-2,4-dioxo-3-pentyl-4-decanyloxybenzoate: synthesis, electrochemistry and oxidative addition kinetics

Autor: Blenerhassitt E. Buitendach, Nomampondomise F. Stuurman, Pieter J. Swarts, Linette Twigge, Jeanet Conradie

Publikováno v: New Journal of Chemistry. 42:4121-4132

The synthesis, electrochemistry and oxidative addition kinetics are presented for a new [Rh(β-diketonato)(CO)(PPh3)] complex (2), of rhodium metal complexed with a β-diketonato ligand, β-L1 = (CH3COC(C10H21OC6H4COO)COCH3)−, containing a long and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6c350e823d950459a9d515d450b88c0
https://doi.org/10.1039/c7nj05039a

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Structures of rhenium(I) complexes with 3-hydroxyflavone and benzhydroxamic acid as O,O′-bidentate ligands and confirmation of π-stacking by solid-state NMR spectroscopy

Autor: Renier Koen, Marietjie Schutte-Smith, Roger Alberto, Leo Kirsten, Hendrik G. Visser, Andreas Roodt, Linette Twigge

The synthesis and crystal structures of two new rhenium(I) complexes obtained utilizing benzhydroxamic acid (BHAH) and 3-hydroxyflavone (2-phenylchromen-4-one, FlavH) as bidentate ligands, namely tetraethylammonium fac-(benzhydroxamato-κ2 O,O′)bro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::161830ca74942a0c390c5ed77a08b2b4
https://doi.org/10.5167/uzh-183840

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Cross-rangeland comparisons on soil carbon dynamics in the pedoderm of semi-arid and arid South African commercial farms

Autor: E. Kotzé, Linette Twigge, Christiaan Cornelius du Preez, P. F. Loke

Publikováno v: Geoderma. 381:114689

The increase of carbon (C) in the pedoderm (0–50 mm soil layer) improves ecosystem functioning and stability. This study evaluated quantitative and qualitative C responses to grazing intensity in the pedoderm of grassland and savanna ecosystems. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd518985cdd2929e641afcc98c858527
https://doi.org/10.1016/j.geoderma.2020.114689

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