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Mixed fluoroamine complexes of chromium(III)
Springer Science and Business Media LLC - Tập 10 - Trang 128-130 - 1985
Mixed difluoro(diamine)(diamme)chromium(III) complexes have been synthesized with ethylenediamine (en), 1,3 propanediamine(tn) and 1,2-cyclohexanediamine(chxn):trans-[CrF2(aa)(bb)]Br (aa=en, bb=tn; aa=tn, bb= chxn) andcis-[CrF2(aa)(bb)]Br (aa=en, bb=chxn). The corresponding fluoroaqua(diamine) (diamine)chromium(III) complexes have been prepared by acid hydrolysis as perchlorate or iodide salts. Al......
Rhodium(III) as a homogeneous catalyst for the oxidative decolorization of ethyl orange with aqueous acidic chloramine-T: a spectrophotometric, kinetic and mechanistic study
Springer Science and Business Media LLC - Tập 38 - Trang 183-190 - 2012
The kinetics and mechanism of sodium N-chloro-p-toluenesulfonamide oxidative decolorization of ethyl orange (EO) in aqueous perchloric acid have been studied at 303 K in the presence of rhodium(III) chloride as catalyst. The reaction exhibits first-order dependence on [EO]o and a fractional-order dependence on [CAT]o, [H+] and [RhIII]. The dielectric effect is positive. The stoichiometry of the re......
A palladium–phosphine catalytic system as an active and recycable precatalyst for Suzuki coupling in water
Springer Science and Business Media LLC - Tập 40 - Trang 657-663 - 2015
The Suzuki–Miyaura reaction of various aryl halides with aryl boronic acids using {[Ph2PCH2PPh2CH=C(O)(C10H7)]PdCl2} as a catalyst has been investigated. The X-ray crystal structure of the catalyst reveals a five-membered chelate ring formed by coordination of the ligand through the phosphine group and the ylidic carbon atom to the metal center. This palladacycle exhibited excellent activities and......
Ligating properties of tertiary phosphine/arsine sulphides or selenides, part V. Complexes of ditertiaryphosphine disulphides and diselenides with platinum(II) and platinum(IV) halides
Springer Science and Business Media LLC - Tập 2 - Trang 195-198 - 1977
Platinum(IV)/platinum(II) chloride and bromide form 1 : 1, 1 : 2 or 3 : 2 (metal: ligand) addition compounds with 1,2-ethylene-, 1,3-propylene-and 1,4-butylene-bisdiphenyl-phosphine sulphide or selenide and 1,6-hexamethylene-bisdiphenylphosphine selenide. The adducts have been characterized by elemental analysis, i.r. and reflectance spectra, and molar conductance data. All adducts have been assig......
Azadithiolate-bridged [FeFe]-hydrogenase mimics with bridgehead N-derivation: structural and electrochemical investigations
Springer Science and Business Media LLC - Tập 47 - Trang 257-263 - 2022
To further develop the active site mimics of azadithiolate-bridged [FeFe]-hydrogenases, a series of new diiron azadithiolate complexes [{(μ-SCH2)2N(C6H4CH2CH2OC(O)R)}Fe2(CO)6] (R = CH2C6H4Me-p, 2; C6H5, 3; CH3, 4) bearing bridgehead N-derivation were successfully prepared by facile esterification reaction of parent complex [{(μ-SCH2)2N(C6H4CH2CH2OH)}Fe2(CO)6] (1) and different carboxyl compounds R......
Bromination of someN-furfurylsalicylaldimine metal complexes
Springer Science and Business Media LLC - Tập 12 - Trang 478-478 - 1987
Compounds of WVI with 1(+)-sorbitol: Study of formation and interconversion equilibria
Springer Science and Business Media LLC - Tập 8 - Trang 21-25 - 1983
The polarimetric study of the WVI-sorbitol system shows the formation of three stable complexes. The species stable at higher pH is monomeric ([WO(OH)(C6H12O6)2]−), while the other two are dinuclear complexes of different stoichiometries ([W2O3(OH)4(C6H10O6)]−2 and [W3O3(OH)(C6H11O6)2]−). The interconversion equilibria have been established and the formation constants determined. The behaviour of ......
Cobalt(II) complexes of 1,2-(diimino-4′-antipyrinyl)ethane and 4-N-(4′-antipyrylmethylidene)aminoantipyrine
Springer Science and Business Media LLC - Tập 25 - Trang 287-292 - 2000
Cobalt(II) complexes of the Schiff bases 1,2-(diimino-4′-antipyrinyl)ethane (GA) and 4-N-(4′-antipyrylmethylidene)aminoantipyrine (AA) have been prepared and characterised by elemental analysis, electrical conductance in non-aqueous solvents, i.r. and electronic spectra, as well as by magnetic susceptibility measurements. The complexes have the general formulae [Co(GA)X]X (X = ClO−
4 or NO3
−), [C......
Crown thioethers and the kinetic macrocyclic effect. Solvolysis of molybdenum(0) tricarbonyl complexes of cyclic and acyclic trithioethers
Springer Science and Business Media LLC - Tập 20 - Trang 583-589 - 1995
Solvolysis of the macrocyclic trithioether complexes fac-[Mo(CO)3([9]aneS3)] ([9]aneS3 = 1,4,7-trithiacyclononane) and fac-[Mo(CO)3(ttob)] (ttob = 2,5,8-trithia[9]-o-benzenophane), and the acyclic trithioether complex fac-[Mo(CO)3(ttn)] (ttn = 2,5,8-trithiononane) in dimethylsulfoxide (DMSO) solution gives the free trithioether in each case. The kinetics of these reactions were studied by 1H-n.m.r......
Investigation of macro-/mesoporous Re2O7/Al2O3 catalysts prepared by a particle-template method for butylene metathesis
Springer Science and Business Media LLC - Tập 36 - Trang 441-445 - 2011
Macro-/mesoporous Al2O3 supports were prepared by using monodisperse polystyrene (PS) microspheres as a template. The pore volume and BET surface area of the Al2O3 supports increased considerably with increasing amounts of the PS microspheres; further investigation showed that PS template only increased the volume of macro-pores but did not change the volume of meso-pores or micro-pores. Macro-/me......
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