Journal of The Chemical Society-dalton Transactions最新文献

THE 1,5-SIGMATROPIC SHIFT OF A BR2 UNIT (R = H, F, OH, NH2, CL, OR SH) OVER A CYCLOPENTADIENE SYSTEM 环戊二烯体系中br2单位(r = h, f, oh, nh2, cl或sh)的1,5-符号位移

Journal of The Chemical Society-dalton Transactions Pub Date : 2016-05-09 DOI: 10.1039/DT9840002233

W. Schoeller

引用次数: 4

A novel reaction between physically separated solid reactants 物理分离的固体反应物之间的一种新的反应

Journal of The Chemical Society-dalton Transactions Pub Date : 2010-08-12 DOI: 10.1039/DT9950003825

J. Gareh, M. G. Barker, M. Begley, A. Batsanov

引用次数: 4

Synthesis and structural characterization of three new compounds containing [Nb6Cl12]2+ units as hydrated hydroxides 以[Nb6Cl12]2+为水合羟基的三种新化合物的合成及结构表征

Journal of The Chemical Society-dalton Transactions Pub Date : 2006-06-14 DOI: 10.1039/DT9950001441

N. Brničević, P. Planinić, R. Mccarley, S. Antolić, M. Luić, B. Kojić-Prodić

{"title":"Synthesis and structural characterization of three new compounds containing [Nb6Cl12]2+ units as hydrated hydroxides","authors":"N. Brničević, P. Planinić, R. Mccarley, S. Antolić, M. Luić, B. Kojić-Prodić","doi":"10.1039/DT9950001441","DOIUrl":"https://doi.org/10.1039/DT9950001441","url":null,"abstract":"Conditions have been established for the preparation of three different hydrated chloroniobium cluster hydroxide compounds from alkaline solutions: triclinic [Nb6Cl12(OH)2(H2O)4]·4H2O 1 and two cubic compounds whose structures are uncertain with regard to the co-ordination of OH– ions, Nb6Cl12(OH)2(H2O)142 and Nb6Cl12(H2O)14(OMe)23. Based upon structural data 2 and 3 may contain either the cation [Nb6Cl12(H2O)6]2+ or the neutral cluster [Nb6Cl12(OH)2(H2O)4] containing hydroxo ligands. In 1 distinct distances of 2.147(5) for Nb–OH, and 2.250(5) and 2.289(5)A for Nb–OH2 were found. In 2 and 3 only distances of 2.19(1) and 2.193(7)A, respectively, were found for the Nb–O bonds of co-ordinated water (or hydroxide-water averaged). Compound 1 is triclinic, space group P1, a= 8.930(3), b= 9.195(2), c= 9.118(1)A, α= 104.37(2), β= 99.51(2) and γ= 116.99(2)°, U= 611.9(3)A3, Z= 1, R= 1, R= 0.036. Compound 2 is cubic, space group Fm3m, a= 14.59(2)A, U= 3105.7(1)A3, Z= 4, R= 0.028. Compound 3 is also cubic, space group Fm3m, a= 14.627(1)A, U= 3129.3(1)A3, Z= 4, R= 0.031. IR spectra of 1 show strong O–H and Nb–O stretching bands that reflect the presence of co-ordinated OH– groups. In 2 and 3 the IR spectra are less definitive about possible co-ordination of hydroxide.","PeriodicalId":17317,"journal":{"name":"Journal of The Chemical Society-dalton Transactions","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2006-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81820610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Synthesis and reactivity of bimetallic palladium(II) methyl complexes with new functional phosphine ligands 新型功能膦配体双金属钯(II)甲基配合物的合成及其反应性

Journal of The Chemical Society-dalton Transactions Pub Date : 2002-12-09 DOI: 10.1039/B208060P

Jang Sub Kim, Ayusman Sen, I. Guzei, L. Liable-Sands, A. Rheingold

引用次数: 2

Molten flux synthesis, single crystal X-ray structure and ion-exchange properties of the first polythiogallate, CsGaS3 第一聚没食子酸酯CsGaS3的熔融熔剂合成、单晶x射线结构和离子交换性质

Journal of The Chemical Society-dalton Transactions Pub Date : 2002-12-09 DOI: 10.1039/B207741H

M. Devi, K. Vidyasagar

引用次数: 13

Solution and solid state coexistence of head–head and head–tail isomers in dimeric Pd(II) and Pt(II) complexes of the type [M2(a–a)2(µ-L-N3N4)2]2+ with a bridging triazolopyrimidine ligand and chelating bidentate diamines [M2(a - a)2(µ-L-N3N4)2]2+型二聚体Pd(II)和Pt(II)配合物与桥接三唑嘧啶配体和螯合双齿二胺的溶液和固体共存

Journal of The Chemical Society-dalton Transactions Pub Date : 2002-12-09 DOI: 10.1039/B207263G

M. Haj, M. Quirós, J. M. Salas

{"title":"Solution and solid state coexistence of head–head and head–tail isomers in dimeric Pd(II) and Pt(II) complexes of the type [M2(a–a)2(µ-L-N3N4)2]2+ with a bridging triazolopyrimidine ligand and chelating bidentate diamines","authors":"M. Haj, M. Quirós, J. M. Salas","doi":"10.1039/B207263G","DOIUrl":"https://doi.org/10.1039/B207263G","url":null,"abstract":"Six palladium and one platinum compound containing dimeric dinuclear cations of the type [M2(a–a)2(µ-7tpO-N3,N4)2]2+ are presented, a–a representing a bidentate chelating amine and 7tpO− being the anionic form of the ligand 4,7-dihydro-7-oxo[1,2,4]triazolo[1,5-a]pyrimidine, which bridges the metal atoms through its nitrogen atoms in positions 3 and 4. Two linkage isomers are possible for such complexes, so called head–head and head–tail. According to 1H- and 195Pt-NMR data, both isomers are present in dmso-d6 solution and display analogous stability. An exhaustive assignment of the 1H signals has been made. The crystal structure of three of these compounds has been determined by single-crystal X-ray diffraction. For two of them, those with bispyrimidine as auxiliary ligand, the head–head and head–tail isomers coexist even in the solid state, both being present in the same crystal in a disordered scheme. This situation is explained by the almost symmetric external shape of the bridging ligand, which is expected to interact with neighbouring species in a similar way even if rotated 180 degrees.","PeriodicalId":17317,"journal":{"name":"Journal of The Chemical Society-dalton Transactions","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89855308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Intramolecular dynamics of [Rh4(CO)6(μ-PPh2)4] in solution 溶液中[Rh4(CO)6(μ-PPh2)4]的分子内动力学

Journal of The Chemical Society-dalton Transactions Pub Date : 2002-12-09 DOI: 10.1039/B208318C

E. Gullo, S. Detti, G. Laurenczy, R. Roulet

引用次数: 4

Solvent-free synthesis of bismuth thiolates and carboxylates 硫酸铋和羧酸铋的无溶剂合成

Journal of The Chemical Society-dalton Transactions Pub Date : 2002-12-09 DOI: 10.1039/B209347B

P. Andrews, G. Deacon, W. R. Jackson, Melissa Maguire, Natalie M. Scott, B. Skelton, Allan H. White

{"title":"Solvent-free synthesis of bismuth thiolates and carboxylates","authors":"P. Andrews, G. Deacon, W. R. Jackson, Melissa Maguire, Natalie M. Scott, B. Skelton, Allan H. White","doi":"10.1039/B209347B","DOIUrl":"https://doi.org/10.1039/B209347B","url":null,"abstract":"The thermally induced solvent-free reactions of Ph3Bi with a series of thiols and carboxylic acids (2-mercaptobenzothiazole, 2-mercaptobenzoxazole, 2-ethoxybenzoic acid, 1-mercapto-2-propanol and salicylic acid) in the ratio 1 ∶ 3 have been investigated and shown to produce the fully substituted bismuth thiolates and benzoates in good yields and purity. Thermogravimetric analysis and differential scanning calorimetry have been used to study the profiles of those reactions involving two solid components and indicate that the reactions occur with the onset of the melting of Ph3Bi. The two products from the reactions with 2-ethoxybenzoic acid and 1-mercapto-2-propanol have been characterised by single crystal X-ray diffraction and shown to be dimeric, [(2-EtOC6H5CO2)3Bi]2, 1, and polymeric, [{(CH3CH(OH)CH2S)(CH3CH(O)CH2S)}Bi]∞, 2, respectively. Compound 1 crystallises as centrosymmetric dimers with the two Bi centres bridged by carboxylate O atoms with possible polymerisation prevented by the further interaction of one of the ethoxy groups with each metal centre. In contrast compound 2 is made up of monomeric units, containing both a mono-anion and a dianion with quasi polymeric linkages arising from bridging S atoms accompanying OH⋯O hydrogen bonding interactions between the two ligand species.","PeriodicalId":17317,"journal":{"name":"Journal of The Chemical Society-dalton Transactions","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85428240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 33

Spontaneous carbon dioxide fixation: a µ4-carbonate bridged tetranuclear zinc(II) complex of a heptadentate Schiff base 自发二氧化碳固定:一个七齿希夫碱的4-碳酸盐桥接四核锌(II)配合物

Journal of The Chemical Society-dalton Transactions Pub Date : 2002-12-09 DOI: 10.1039/B209328F

M. Fondo, A. M. García-Deibe, M. R. Bermejo, J. Sanmartín, A. Llamas-Saiz

引用次数: 40

Hydroformylation of alkenes in supercritical carbon dioxide catalysed by rhodium trialkylphosphine complexes 三烷基膦铑配合物催化超临界二氧化碳中烯烃的氢甲酰化反应

Journal of The Chemical Society-dalton Transactions Pub Date : 2002-12-09 DOI: 10.1039/B207747G

M. Sellin, Ingrid Bach, J. M. Webster, F. Montilla, Vitor Rosa, T. Avilés, M. Poliakoff, D. Cole-Hamilton

{"title":"Hydroformylation of alkenes in supercritical carbon dioxide catalysed by rhodium trialkylphosphine complexes","authors":"M. Sellin, Ingrid Bach, J. M. Webster, F. Montilla, Vitor Rosa, T. Avilés, M. Poliakoff, D. Cole-Hamilton","doi":"10.1039/B207747G","DOIUrl":"https://doi.org/10.1039/B207747G","url":null,"abstract":"Rhodium complexes modified by simple trialkylphosphines can be used to carry out homogeneous hydroformylation in supercritical carbon dioxide (scCO2). The catalyst derived from PEt3 is more active and slightly more selective for the linear products in scCO2 than in toluene, and under the same reaction conditions [100°C, 40 bar of CO/H2 \u0000(1∶1)] P(OPri)3 is also an effective ligand giving good catalyst solubility and activity. Other ligands such as PPh3, POct3, PCy3, and P(4-C6H4But)3 are less effective because of the low solubility of their rhodium complexes in scCO2. P(4-C6H4SiMe3)nPh3−n (n = 3 or 1) and P(OPh)3 impart activity despite their complexes only being poorly soluble in scCO2. Under subcritical conditions, using PEt3 as the ligand, C7-alcohols from hydrogenation of the first formed aldehydes are the main products whilst above a total pressure of 200 bar, where the solution remains supercritical (monophasic) throughout the reaction, aldehydes are obtained with 97% selectivity. High pressure IR studies in scCO2 using PEt3 as the ligand are reported.","PeriodicalId":17317,"journal":{"name":"Journal of The Chemical Society-dalton Transactions","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88481842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 48