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热重分析(TG)和微商热重法(DTG)广泛应用于各个研究领域,用非等温热重法测定固体化合物的热分解动力学参数已有报导.许多作者提出各种不同的数据处理方法.本文用的ρ-CH_3C_6H_4SR 型硫醚对钯的萃取具有选择性好、分配比高、气味较小、易溶于脂肪烃类溶剂、易于合成、是很有发展前途的一类萃取剂.我们合成五种ρ-CH_3C_6H_4SR(R:n-C_4H_9,n-C_6H_(13),n-C_8H_(17),n-C_(10)H_(21),n-C_(12)H_(25))型硫醚与钯(Ⅱ)的配合物,用TG-DTG 法研究它们的热分解过程,用微商法(Freeman-Carroll 方程)及积分法(Coats-Redfern 方程)获得了这些配合物的热分解动力学参数. 相似文献
3.
BaoAnSONG GangLIU DeYuHU HuaZHANG 《中国化学快报》2004,15(10):1140-1142
A series of substituted (6-chloropyridine-3-yl)methyl heterocyclic thioether derivatives were prepared by indium mediating in water. The preliminary biological tests showed that compound 3d exhibited good antiviral activity. 相似文献
4.
Matthew HesfordWilliam Levason Simon D. OrchardGillian Reid 《Journal of organometallic chemistry》2002,649(2):214-218
The syntheses and spectroscopic characterisation of the new facultative tridentate tellurium containing ligands MeS(CH2)3Te(CH2)3SMe (S2Te) and H2N(CH2)3Te(CH2)3NH2 are described. The complexes of the former, fac-[Mn(CO)3(S2Te)]CF3SO3, [Rh(Cp*)(S2Te)][PF6]2, [MCl(S2Te)]PF6 (M=Pd or Pt), [Cu(S2Te)]BF4 and [Ag(S2Te)]CF3SO3 have been prepared and characterised by analysis, IR, 1H-, 13C{1H}-, 125Te- and 195Pt-NMR spectroscopy and mass spectrometry. The X-ray crystal structures of [Rh(Cp*)(S2Te)][PF6]2 and [PtCl(S2Te)]PF6 are described. The results are compared with those obtained from complexes of the related tridentates Te{(CH2)3TeR}2, Se{(CH2)3SeMe}2 and S{(CH2)3SR}2. 相似文献
5.
Oligothioethers 4-RC6H4(SC6H4-4)nX (n = 1-3; X = Br, I; R = NO2; X = Br; R = MeO. n = 1 and 2; X = I; R = MeO. n = 4; X = Br; R = NO2) have been prepared through a process involving (i) palladium-catalyzed C-S coupling between 4-RC6H4(SC6H4-4)n−1I and 4-BrC6H4SH to give 4-RC6H4(SC6H4-4)nBr and (ii) copper-catalyzed replacement of Br by I. 相似文献
6.
Marc A. Little Jonathan J. Loughrey Amedeo Santoro Malcolm A. Halcrow Michaele J. Hardie 《Tetrahedron letters》2014
The synthesis of four 3,4-di(alkylsulfanyl)benzyl alcohol derivatives is described, in five steps from methyl 3,4-di(hydroxy)benzoate via a Newman–Kwart rearrangement. Incubation of these derivatives in formic acid affords 2,3,7,8,12,13-hexakis(alkylsulfanyl)-10,15-dihydro-5H-tribenzo[a,d,g]cyclononene products, which are hexa-sulfanyl analogues of the well-known supramolecular cavitand host, cyclotriveratrylene (CTV). The yield of this cyclization depends strongly on the alkylsulfanyl substituents present, in the order SMe > SEt ≈ SiPr ? SBn. A crystal structure determination of one of the cyclotrimers shows a mode of self-association that is commonly exhibited by CTV itself. 相似文献
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Cemil İbiş Zeliha Gökmen Nihal Yilmaz Bozkurt 《Phosphorus, sulfur, and silicon and the related elements》2013,188(12):2907-2914
Mono(thio)substituted dienes 1a-1b gave compounds 3a-c and 5d-g with piperazine and piperidine derivatives in dichloromethane. Compounds 8 , 9 , and 10 were obtained from the reactions of perchlorobutadiene ( 6 ) with 1,4-butanedithiol ( 7 ) in ethanol in the presence of sodium hydroxide. Compounds 12a-b , 13a-b were obtained from the reactions of perchlorobutadiene ( 6 ) with allylmercaptan (CH 2 =CH--CH 2 --SH) and mercaptoethanol (HO--CH 2 --CH 2 --SH). 相似文献
9.
N-Amido imidazolium salt was employed as a ligand in the palladium-catalyzed cross-coupling reaction of aryl halides and thiols, and showed good activity in the formation of thioether. The best combination for the coupling with aryl bromides was N-amido imidazolium salt 2 and NaHMDS, and that for the coupling with aryl iodides was N-amido imidazolium salt 1 and KOtBu. The coupling reactions were conducted in the presence of Pd(OAc)2 (1 mol %) in DMSO at 80 °C for 12 h. 相似文献
10.
The self‐assembly of 4 ‐ MTPP [ 4 ‐ MTPP = 2‐(methylthio)‐4‐(pyridin‐4‐yl)pyrimidine] with Cu(NO3)2 and AgNO3 was structurally investigated. For Cu(NO3)2, a discrete mononuclear CuII coordination compound, [Cu( 4 ‐ MTPP )2(NO3)2] ( 1 ), resulted that is exclusively based on Cu–N coordination. For AgNO3, a unique one‐dimensional double‐chain structure ( 2 ) was obtained with the Ag–N distances varying from 2.181(9) to 2.223(9) Å, and the average Ag–S distance being 2.98 Å. Compared to zero‐dimensional 1 , the extension to one‐dimensional 2 is considered to result from the specific affinity between Ag+ and the ligand 4 ‐ MTPP that is attributed to the strong coordinating tendency of silver for aromatic nitrogen and thioether sulfur atoms. 相似文献