Electronic Structure of Nitric Oxide Adducts of Bis(diaryl-1,2-dithiolene)iron Compounds: Four-Membered Electron-Transfer Series [Fe(NO)(L)<sub>2</sub>]<i><sup>z</sup></i> (<i>z</i> = 1+, 0, 1−, 2−)
作者:Prasanta Ghosh、Keira Stobie、Eckhard Bill、Eberhard Bothe、Thomas Weyhermüller、Michael D. Ward、Jon A. McCleverty、Karl Wieghardt
DOI:10.1021/ic061874a
日期:2007.1.1
is shown that the monocationic, neutral, and monoanionic species possess an FeNO}6 (S = 0) moiety where the redox chemistry is sulfur ligand-based, (L)2-(L*)1-: [Fe(NO)(L*)2]+ (S = 0), [Fe(NO)(L*)(L)]0 <--> [Fe(NO)(L)(L*)]0 (S = 1/2), [Fe(NO)(L)2]- (S = 0). Further one-electron reduction generates a dianion with an FeNO}7 (S = 1/2) unit and two fully reduced, diamagnetic dianions L2-: [Fe(NO)(L)2]2-
Oxygenation of Dimethylsulfoxide and Copper-Catalyzed Autoxidation of Substituted Benzoins
作者:Harald Gampp、Doris Haspra、Walter Spieler、Andress D. Zuberbühler
DOI:10.1002/hlca.19840670414
日期:1984.6.20
The catalytic activity of autoxidized copper (I) in the oxidation of para-disubstituted benzoins in dimethylsulfoxide by O2 was studied both kinetically and by product analysis. Stoichiometry (1), accounts for more than 80% of the reaction. The catlytic oxydation was followed by monitering th consumption of O2 manometrically by a fully automatic apparatus.
reaction temperature, the molar ratios sulfamide/1,2-dicarbonyl compound and MPA/1,2-dicarbonyl compound, and alternative experimental procedures on the yield of the reaction product were investigated. Under suitable experimental conditions eight compounds were obtained in good yields. The catalyst was recycled and reused, but with some loss of its catalytic activity. The presented synthetic method
摘要 我们报告了一种由Keggin型酸(H 3 PMo 12 O 40 ·nH 2催化的1,2-二羰基化合物与磺酰胺的无溶剂缩合反应的研究O,MPA)以获得3,4-二取代的1,2,5-噻二唑1,1-二氧化物衍生物。为了在不同实验条件下比较结果,还在溶液中或使用纳米级二氧化硅负载的MPA催化剂进行了一些反应。催化剂的热预处理温度,反应温度,磺酰胺/ 1,2-二羰基化合物和MPA / 1,2-二羰基化合物的摩尔比以及其他实验步骤对反应产物收率的影响调查。在合适的实验条件下,以高收率获得了八种化合物。催化剂被回收再利用,但其催化活性有所下降。提出的合成方法是一种简单,清洁且环保的替代方法,可用于合成不同的1,2,5-噻二唑1 我们报告了一种由Keggin型酸(H 3 PMo 12 O 40 ·nH 2催化的1,2-二羰基化合物与磺酰胺的无溶剂缩合反应的研究O,MPA)以获得3,4-二取代的1,2
Molecular and Electronic Structure of Square-Planar Gold Complexes Containing Two 1,2-Di(4-<i>tert</i>-butylphenyl)ethylene-1,2-dithiolato Ligands: [Au(<sup>2</sup>L)<sub>2</sub>]<sup>1+/0/1-/2-</sup>. A Combined Experimental and Computational Study
作者:Swarnalatha Kokatam、Kallol Ray、Joseph Pap、Eckhard Bill、William E. Geiger、Robert J. LeSuer、Philip H. Rieger、Thomas Weyhermüller、Frank Neese、Karl Wieghardt
DOI:10.1021/ic061181u
日期:2007.2.19
pi radical monoanion. The electronicstructures of this series of gold species have been elucidated by UV-vis, EPR spectroscopies, and DFT calculations. It is shown computationally by density functional theoretical (DFT) methods that the electronicstructure of [AuIII(1L*)2]+ is best described as a singlet diradical (St = 0); the ligand mixed valency in the neutral species 2 is of class (III) (delocalized);
then investigated with a range of α-hydroxyketones to give vinylenecarbonates (symmetrical and unsymmetrical, aromatic, heteroaromatic and alkyl) with moderate to high yields (30–97%, 13 examples). Scale-up experiments were also conducted to highlight the synthetic utility of this method. Finally, it was demonstrated that vinylenecarbonates can be produced from waste polycarbonate contained in compact