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Browsing Natural and Agricultural Sciences by UP Author "Landman, Marile"
Now showing items 1-20 of 29
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Landman, Marile; Van der Westhuizen, Belinda; Bezuidenhout, Daniela Ina; Liles, David C. (International Union of Crystallography, 2011)The title compound, (C21H25N2)[ReO4], was formed as the unexpected product in an attempted synthesis of a rhenium(I)–N-heterocyclic carbene (NHC) complex. The compound has crystallographic mirror symmetry with both the ...
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Kovalchuk, K.; Landman, Marile; Masalova, I. (Taylor & Francis, 2013)Density functional theory (DFT) of calculations was used to optimize the molecular structures of a succinimide surfactant at B3LYP/6-311 level. The interaction of the surfactant with water molecules was investigated. The ...
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Landman, Marile; Levell, Tamzyn J.; Van Rooyen, Petrus H.; Conradie, Jeanet (Elsevier, 2014-05)The synthesis and selected crystal structures of novel (M = Cr or Mo) and known (M =W) [(CO)4(PPh3) M = C(OEt)R] complexes, M = Cr, R = 2-thienyl (1), 2-furyl (2); M = Mo, R = 2-thienyl (3), 2-furyl (4); M = W, R = ...
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Landman, Marile; Barnard, Werner; Van Rooyen, Petrus H.; Liles, David C. (Elsevier, 2012-08)The carbine complex [MnCp(CO)2C(OEt)(TT)], (TT = 3,6-dimethylthieno[3,2-b]thiophene) 1, was synthesized according to the classical Fisher method. The novel complex was fully characterized using various spectroscopic ...
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Fraser, Roan; Van Rooyen, Petrus H.; Landman, Marile (Taylor and Francis, 2016-09)Homo- and heteronuclear bimetallic carbene complexes of group VII transition metals (Mn and Re), with cymantrene or cyclopentadienyl rhenium tricarbonyl as the starting synthon, have been synthesized according to classic ...
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Buitendach, Blenerhassitt E.; Erasmus, Elizabeth; Landman, Marile; Niemantsverdriet, J. W. (Hans); Swarts, Jannie C. (Royal Society of Chemistry, 2016-03)Reaction of [Mn3(OAc)6O·3H2O](+) (1) with ferrocenyl β-diketones of the type FcCOCH2COR with R = CF3 (2a) and CH3 (2b), Ph = C6H5 (2c), and Fc = Fe(II)(η(5)-C5H4)(η(5)-C5H5) (2d) yielded a series of ferrocene-functionalized ...
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Landman, Marile; Conradie, Jeanet (Elsevier, 2015-08)A density functional theory (DFT) calculated conformation analysis of the twelve possible conformations of [Mo(CO)4(PPh3){C(NHCy)(2-furyl)}], 1, utilizing different DFT methods, showed that both the cis-syn,Z (2), 1-Z, ...
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Landman, Marile; Pretorius, René; Fraser, Roan; Buitendach, Blenerhassit E.; Conradie, Marrigje M.; Van Rooyen, Petrus H.; Conradie, Jeanet (Elsevier, 2014-06)tThe electrochemical behaviour of a series of sixteen novel Fischer ethoxy- and aminocarbenecomplexes of the type [(CO)4(PPh3)W = C(X)R] with R = 2-thienyl or 2-furyl and X = OEt or NHCy,(1-4), [(CO)3(dppe)W = C(X)R] with ...
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Gostynski, Roxanne; Fraser, Roan; Landman, Marile; Erasmus, Elizabeth; Conradie, Jeanet (Elsevier, 2017-05)It is illustrated that the electrochemical redox potentials of chromium(0) Fischer carbene complexes containing a heteroaromatic substituent can be determined to a high degree of accuracy from the gas phase density functional ...
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Malan, F.P. (Frederick); Singleton, Eric; Conradie, Jeanet; Landman, Marile (Elsevier, 2018-04)Please read abstract in the article.
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Landman, Marile; Lui, Renyuan; Van Rooyen, Petrus H.; Conradie, Jeanet (Elsevier, 2013-12)The electrochemical behaviour of a series of Fischer ethoxycarbene complexes of the type [(CO)5Crdouble bond; length as m-dashC(OEt)R] with R = 2-thienyl (1), 2-furyl (2), 2-(N-methylpyrrolyl) (3), N-methyl-2-(2′-thienyl)pyrrole) ...
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Jansen van Rensburg, Armand; Landman, Marile; Van der Westhuizen, Deidre; Conradie, Marrigje M.; Conradie, Jeanet (Elsevier, 2015-12)A combined electrochemical and density functional theory study on four triphenylarsine-substituted tetracarbonyl tungsten(0) Fischer carbene complexes of general formula [(CO)4(AsPh3)WC(OEt)(Ar)], with Ar = 2-thienyl ...
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Botha, Ebrahiem; Landman, Marile; Van Rooyen, Petrus H.; Erasmus, Elizabeth (Elsevier, 2018-10)Please read abstract in the article.
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Landman, Marile; Liu, Renyuan; Fraser, Roan; Van Rooyen, Petrus H.; Conradie, Jeanet (Elsevier, 2014-02)X-ray crystallography data, DFT calculations and cyclic voltammograms in synergy shed light on the mer4fac isomerization process of Cr carbenes of the type [(CO)3(dppe)Cr]C(X)R] with R ¼ 2-thienyl or 2-furyl and X ¼ OEt ...
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Malan, F.P. (Frederick); Singleton, Eric; Van Rooyen, Petrus H.; Landman, Marile (Elsevier, 2016-07)Nine new Ni(II)-NHC complexes, [CpNiBr(NHC)], were synthesised from nickelocene and the corresponding symmetric or asymmetric alkyl/-benzyl/phenylethyl imidazolium bromide ligands in relatively high yield. Access to each ...
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Landman, Marile; Buitendach, Blenerhassitt E.; Conradie, Marrigje M.; Fraser, Roan; Van Rooyen, Petrus H.; Conradie, Jeanet (Elsevier, 2015-02)An electrochemical study of a series of mono- and biscarbene complexes of tungsten pentacarbonyl with mono- and dimeric heteroarene substituents are reported and compared in CH3CN and DCM. Results revealed that the order ...
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Adeniyi, Adebayo A.; Landman, Marile; Conradie, Jeanet (Electrochemical Society, 2021-06)Please read abstract in the article.
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Jansen van Rensburg, Armand; Landman, Marile; Van Rooyen, Petrus H.; Conradie, Marrigje M.; Conradie, Jeanet (Elsevier, 2017-01)The synthesis and structural investigations are presented of molybdenum(0) Fischer carbene complexes with general formula [L(CO)4MoC(OEt)(Ar)] with L = CO, PPh3, AsPh3 and Ar = 2-thienyl, 2-furyl, 2-(N-methyl)pyrrolyl, ...
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Landman, Marile; Van der Westhuizen, Belinda; Bezuidenhout, Daniela Ina; Liles, David C. (International Union of Crystallography, 2011)The title compound, C10H13NO, was obtained as the unexpected, almost exclusive, product in the attempted synthesis of a manganese(I)–N-heterocyclic carbene (NHC) complex. The dihedral angle between the planes of the ...
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Lotz, Simon; Landman, Marile; Olivier, Andrew John; Bezuidenhout, Daniela Ina; Liles, David C.; Palmer, Eric R. (Royal Society of Chemistry, 2011-06-28)Please read abstract in article.
Now showing items 1-20 of 29