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A kinetic study of the reaction of Mn and Re carbonyls with some bis(N,N-dialkylselenocarbamoyl) selenides Mn和Re羰基与双(N,N-二烷基硒代氨基甲酸基)硒化物反应的动力学研究
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80019-X
Paola Deplano, Emanuele F. Trogu
{"title":"A kinetic study of the reaction of Mn and Re carbonyls with some bis(N,N-dialkylselenocarbamoyl) selenides","authors":"Paola Deplano,&nbsp;Emanuele F. Trogu","doi":"10.1016/0022-1902(81)80019-X","DOIUrl":"https://doi.org/10.1016/0022-1902(81)80019-X","url":null,"abstract":"<div><p>Using a 366 nm source, irradiation of a CH<sub>2</sub>Cl<sub>2</sub> solution of M<sub>2</sub>(CO)<sub>10</sub> (MMn, Re) and an excess of (LL):a 1:1 mixture of R<sub>I</sub>R<sub>II</sub>NC(Se)Se(Se)CNR<sub>I</sub>R<sub>II</sub> and R<sub>I</sub>R<sub>II</sub>NC(Se)Se<sub>3</sub>(Se)CNR<sub>I</sub>R<sub>II</sub> [if R<sub>I</sub> R<sub>II</sub> C<sub>2</sub>H<sub>5</sub>(LL) (Et<sub>2</sub>dsc-dscEt<sub>2</sub>), if R<sub>I</sub>R<sub>II</sub>N = morpholyl (LL) = (modsc-dscmo), if R<sub>I</sub>CH<sub>3</sub>, R<sub>II</sub>C<sub>6</sub>H<sub>5</sub> (LL) = (Mephdsc-dscMeph) quantitatively produces [M(CO)<sub>4</sub>L], where <span><math><mtext>L = R</mtext><msub><mi></mi><mn>I</mn></msub><mtext>R</mtext><msub><mi></mi><mn>II</mn></msub><mtext>NC</mtext><mglyph></mglyph><mtext>(−)</mtext></math></span> The photochemical reaction is extensively studied, the quantum yields and the rate constants are determined. A S<sub>N</sub>1-type mechanism is proposed, involving homolytic MM bond fission as the rate determining step.</p></div>","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 6","pages":"Pages 1213-1217"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80019-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91735477","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: 3
The electronic spectrum of bis(N,N-diethyldithiocarbamato) Cu(II) 双(N,N-二乙基二硫代氨基脲)Cu(II)的电子能谱
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80017-6
George St. Nikolov, Michail A. Atanasov
{"title":"The electronic spectrum of bis(N,N-diethyldithiocarbamato) Cu(II)","authors":"George St. Nikolov,&nbsp;Michail A. Atanasov","doi":"10.1016/0022-1902(81)80017-6","DOIUrl":"https://doi.org/10.1016/0022-1902(81)80017-6","url":null,"abstract":"<div><p>The electronic spectrum of Cu(II) doped in a Zn(dtc)<sub>2</sub> matrix (dtc-diethyldithiocarbamate anion) has been studied theoretically using the angular overlap model (AOM) and crystal field theory (CFT). The effect of the ligand bite angle (α), polar angle (θ) and spin-orbit coupling on the electronic spectrum has been traced. The contributions of these factors have been found to be small, yet important in producing the transition energies and polarizations of the observed spectrum. Spectral AOM parameters, derived from the analysis of the charge transfer bands have been used to interpret the photoelectron spectra and the <span><math><mtext>“d-d”</mtext></math></span> transitions. Two sets of CFT parameters (called σ- and π-sets) were needed in the CFT treatment to reproduce the AOM treatment and this explains why previous CFT treatments were unsuccessful.</p></div>","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 6","pages":"Pages 1201-1206"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80017-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91735478","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: 5
Studies on some mixed ligand complexes of Ni(II) Ni(II)混合配体配合物的研究
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80512-X
C.P. Saxena, P.V. Khadikar
{"title":"Studies on some mixed ligand complexes of Ni(II)","authors":"C.P. Saxena,&nbsp;P.V. Khadikar","doi":"10.1016/0022-1902(81)80512-X","DOIUrl":"https://doi.org/10.1016/0022-1902(81)80512-X","url":null,"abstract":"","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 3","pages":"Pages 603-605"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80512-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91739993","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: 11
Crystal data and vibrational spectra of the rare earth decavanadates 稀土十氰酸盐的晶体数据和振动谱
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80622-7
Graciela Rigotti, Graciela Punte, Blas E. Rivero, Marta E. Escobar, Enrique J. Baran
{"title":"Crystal data and vibrational spectra of the rare earth decavanadates","authors":"Graciela Rigotti,&nbsp;Graciela Punte,&nbsp;Blas E. Rivero,&nbsp;Marta E. Escobar,&nbsp;Enrique J. Baran","doi":"10.1016/0022-1902(81)80622-7","DOIUrl":"10.1016/0022-1902(81)80622-7","url":null,"abstract":"<div><p>Crystallographic data for the full series of rare earth decavanadates of the type Ln<sub>2</sub>V<sub>10</sub>O<sub>28</sub>·nH<sub>2</sub>O have been obtained from monocrystals by precession and Weissenberg measurements. The substances belongs to four different structural groups and their characteristics are briefly discussed. The vibrational spectra of the compounds have also been recorded and interpreted.</p></div>","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 11","pages":"Pages 2811-2814"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80622-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83128982","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: 17
Linear free energy relationships for Fe(III) complexes with aroylacetanilides 铁(III)与芳基乙酰苯胺配合物的线性自由能关系
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)90016-6
A. S. Shawali, M. Naoum, Nahed F. Abdelfattah
{"title":"Linear free energy relationships for Fe(III) complexes with aroylacetanilides","authors":"A. S. Shawali, M. Naoum, Nahed F. Abdelfattah","doi":"10.1016/0022-1902(81)90016-6","DOIUrl":"https://doi.org/10.1016/0022-1902(81)90016-6","url":null,"abstract":"","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"14 1","pages":"315-322"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79596826","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: 1
Electrophilic behaviour of coordinated nitrosyl in dinitrosylmolybdenum(II) derivatives. Isolation of [Mo(acac)2(hia)(NO)] 二硝基钼(II)衍生物中配位亚硝基的亲电行为。[Mo(acac)2(hia)(NO)]的分离
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80471-X
Sabyasachi Sarkar, Periyasamy Subramanian
{"title":"Electrophilic behaviour of coordinated nitrosyl in dinitrosylmolybdenum(II) derivatives. Isolation of [Mo(acac)2(hia)(NO)]","authors":"Sabyasachi Sarkar,&nbsp;Periyasamy Subramanian","doi":"10.1016/0022-1902(81)80471-X","DOIUrl":"10.1016/0022-1902(81)80471-X","url":null,"abstract":"","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 1","pages":"Pages 202-203"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80471-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83218959","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: 4
Radiopolarography of mendelevium in aqueous solutions 水溶液中钔的放射极谱学
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80647-1
F. David, K. Samhoun, E.K. Hulet, P.A. Baisden, R. Dougan, J.H. Landrum, R.W. Lougheed, J.F. Wild, G.D. O'Kelley
{"title":"Radiopolarography of mendelevium in aqueous solutions","authors":"F. David,&nbsp;K. Samhoun,&nbsp;E.K. Hulet,&nbsp;P.A. Baisden,&nbsp;R. Dougan,&nbsp;J.H. Landrum,&nbsp;R.W. Lougheed,&nbsp;J.F. Wild,&nbsp;G.D. O'Kelley","doi":"10.1016/0022-1902(81)80647-1","DOIUrl":"10.1016/0022-1902(81)80647-1","url":null,"abstract":"<div><p>The possible existence of a monovalent ion of mendelevium has been examined further by radiopolarography. Experiments were conducted in several aqueous media with <sup>241</sup>Am, <sup>249</sup>Cf, <sup>254</sup>Es, <sup>255,256</sup>Fm and <sup>256</sup>Md tracers. Half-wave amalgamation potentials of Md in tetramethylammonium perchlorate and in LiCl were identical within the experimental errors at −1.755 ± 0.005 V vs the saturated calomel electrode, in good agreement with an earlier study by radiocoulometry in an ammonium acetate medium. No shift in the half-wave potential of Md was observed due to NH<sub>4</sub><sup>+</sup> or Cl<sup>−</sup> ions; hence, these ions do not act as complexing agents for Md ions present during electrochemical reductions. The shift in the half-wave potential observed in the presence of citrate as a complexing agent was characteristic of the reduction process Md<sup>2+</sup> → Md<sup>0</sup>(Hg). In noncomplexing media, the slope of the logarithmically transformed wave of Md was ∼ 30 mV, consistent only with a reversible, two-electron reduction process. All of our results provide evidence for electrochemical reduction of the Md<sup>2+</sup> ion only and disprove the existence of an the intermediate Md<sup>+</sup> ion in aqueous solution with properties like those of Cs<sup>+</sup>, Ag<sup>+</sup> or Cu<sup>+</sup>.</p></div>","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 11","pages":"Pages 2941-2945"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80647-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84685094","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: 13
Preparation and characterization of dicarboniltriphenylphosphinedi(xanthate) molybdenum(II) and- tungsten(II) complexes 二碳基三苯膦(黄药)钼(II)和钨(II)配合物的制备和表征
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80461-7
M.F. Perpiñán, A. Santos
{"title":"Preparation and characterization of dicarboniltriphenylphosphinedi(xanthate) molybdenum(II) and- tungsten(II) complexes","authors":"M.F. Perpiñán,&nbsp;A. Santos","doi":"10.1016/0022-1902(81)80461-7","DOIUrl":"10.1016/0022-1902(81)80461-7","url":null,"abstract":"","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 1","pages":"Pages 181-184"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80461-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88610058","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: 5
Cu(II) halopropionate complexes
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80608-2
Ewa John
{"title":"Cu(II) halopropionate complexes","authors":"Ewa John","doi":"10.1016/0022-1902(81)80608-2","DOIUrl":"10.1016/0022-1902(81)80608-2","url":null,"abstract":"<div><p>Cu(II) complexes were prepared with the following acids: propionic, α- and β-bromoproionic, α- and β-chloropropionic, α,β-dichloropropionic and β-iodopropionic. On the basis of elemental and thermogravimetric analyses the compositions of the complexes crystallized from water and recrystallized from methanol, acetone and dioxane was determined.</p><p>The effect of these solvents on the spectral properties of Cu(II) halopropionates in the UV and IR region was investigated, and it is shown that in solvents of low dielectric constants dimeric structures may occur. IR spectra of the Cu(II) complexes recrystallized form the above mentioned solvents and of their sodium salts were measured. The results obtained indicate that the structure of Cu(II) halopropionates is always dimeric in the solid state, analogous to that of Cu(II) acetate monohydrate. This conclusion is also confirmed by abnormal magnetic moments of these complexes. Temperature dependent magnetic susceptibilities indicative of antiferromagnetic nature were observed.</p></div>","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 11","pages":"Pages 2735-2742"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80608-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88779745","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: 1
Carbon having unique properties prepared from microcrystalline cellulose 由微晶纤维素制备的具有独特性质的碳
Journal of Inorganic and Nuclear Chemistry Pub Date : 1981-01-01 DOI: 10.1016/0022-1902(81)80484-8
O.A. Battista, Donald R. Martin
{"title":"Carbon having unique properties prepared from microcrystalline cellulose","authors":"O.A. Battista,&nbsp;Donald R. Martin","doi":"10.1016/0022-1902(81)80484-8","DOIUrl":"10.1016/0022-1902(81)80484-8","url":null,"abstract":"<div><p>Carbons possessing unique properties somewhat like those of glassy carbon have been prepared from structural microcrystalline cellulose precursors by prolonged pyrolysis up to 800°C in a nitrogen atmosphere. Samples of the dry microcrystalline cellulose powders were fabricated into various shapes in a high pressure mold or by slow drying of an aqueous suspensoid gel in a mold under ambient conditions. Pyrolysis gave objects of amorphous carbon about one-third the original size. Some of the carbons are about as hard as glass and have a density (helium pycnometer) of 2.01 g/cm<sup>3</sup> (<em>cf.</em> graphite 2.265). As expected, the carbon resulting from the pressed microcrystalline cellulose dry powders had a lower density and more pores than carbons produced from structural forms, prepared from air dried, aqueous gels. Pore size and pore size distribution data and scanning electron photomicrographs are shown.</p></div>","PeriodicalId":16275,"journal":{"name":"Journal of Inorganic and Nuclear Chemistry","volume":"43 3","pages":"Pages 459-465"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-1902(81)80484-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87368632","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: 1
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