European Journal of Solid State and Inorganic Chemistry最新文献_第2页

Identification, composition, thermodynamic and structural properties of a pyroaurite-like iron(II)-iron (III) hydroxy-oxalate green rust 类辉黄铁矿铁(II)-羟基草酸铁(III)绿锈的鉴定、组成、热力学和结构性质

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-11-01 DOI: 10.1016/S0992-4361(99)80006-X

P. Refait , A. Charton , J.-M.R. Génin

{"title":"Identification, composition, thermodynamic and structural properties of a pyroaurite-like iron(II)-iron (III) hydroxy-oxalate green rust","authors":"P. Refait , A. Charton , J.-M.R. Génin","doi":"10.1016/S0992-4361(99)80006-X","DOIUrl":"10.1016/S0992-4361(99)80006-X","url":null,"abstract":"<div>The aerial oxidation of aqueous suspensions of ferrous hydroxide precipitated from ferrous oxalate and caustic soda can lead to an iron (II)-iron (III) hydroxy-oxalate of the pyroaurite group, a GR(C2O42-) Green Rust. As other GR compounds, it is unstable with respect to the action of oxygen and oxidises later on. Its chemical composition was determined to be [FeII6 FeIII2(OH)16]2+[C2O42- · nH2O], with n more likely equal to 3 on the basis of structural considerations. The composition does not vary and the Fe (II) / Fe (III) ratio in the compound is measured by means of transmission Mössbauer spectroscopy at 78 K and 20 K in the range from 2.8 to 3.2 for various samples at various stages of the reaction. GR(C2O42-) is paramagnetic at both temperatures and is unambiguously distinguished from ferrous hydroxide, the initial reactant, and magnetite, the main final product, which are magnetically ordered at 20 K. The spectrum of the GR compound is composed of three quadrupole doublets, one due to the Fe(III) cations characterised by a small quadrupole splitting ΔEQ of 0.40 mm s−1, and two due to the Fe(II) cations, characterised by larger ΔEQ values of about 2.55 and 2.85 mm s−1. Finally, from the observed equilibrium conditions between ferrous hydroxide and GR(C2O42-), the standard free enthalpy of formation of GR(C2O42-) was computed to be : ΔG°f[FeII6 FeIII2 (OH)16]2+[C2O42- · 3H2O] = −5383 ± 3 kJ mol−1.</div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 10","pages":"Pages 655-666"},"PeriodicalIF":0.0,"publicationDate":"1998-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(99)80006-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75264723","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: 40

Structure of β-SrRh2O4 from X-ray and neutron powder diffraction β-SrRh2O4的x射线和中子粉末衍射结构

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-11-01 DOI: 10.1016/S0992-4361(99)80008-3

A.L. Hector, W. Levason, M.T. Weller *

引用次数: 16

A new dinuclear molybdenum(V)-sulfur complex containing citrate ligand: Synthesis and characterization of K2.5Na2NH4[Mo2O2S2(cit)2].5H2O 含柠檬酸盐配体的新型双核钼(V)硫配合物:K2.5Na2NH4[Mo2O2S2(cit)2].5H2O的合成与表征

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-11-01 DOI: 10.1016/S0992-4361(99)80014-9

Y.-H. Xing , J.-Q. Xu , H.-R. Sun , D.-M. Li , Y. Xing , Y.-H. Lin , H.-Q. Jia

{"title":"A new dinuclear molybdenum(V)-sulfur complex containing citrate ligand: Synthesis and characterization of K2.5Na2NH4[Mo2O2S2(cit)2].5H2O","authors":"Y.-H. Xing , J.-Q. Xu , H.-R. Sun , D.-M. Li , Y. Xing , Y.-H. Lin , H.-Q. Jia","doi":"10.1016/S0992-4361(99)80014-9","DOIUrl":"10.1016/S0992-4361(99)80014-9","url":null,"abstract":"<div>The complex, K2.5Na2NH4[Mo2O2S2(cit)2]·5H2O (1), was obtained by crystallization from a solution of (NH4)2MoS4, potassium citrate (K3cit) and hydroxyl sodium in methanol and water under an atmosphere of pure nitrogen at ambient temperature. The crystals are triclinic, space group P1¯, a = 7.376 (3)Å, b = 14.620 (2) Å, c = 14.661 (1) Å, α = 71.10 (1)°, β = 81.77 (1)°, γ = 78.27(2)°, R = 0.0584 for 2545 observed (I > 2σ (I)) reflections. Single crystal structure analysis reveals that citrate ligand coordinated to molybdenum atom through two carboxylato oxygens and one deprotonated hydroxyl oxygen together with two bridging sulfur atoms and a terminal oxygen atom completes distorted coordination octahedron around each molybdenum atom. Principal dimensions are Mo = O1, 1.707 Å (av); Mo-Sb, 2.341 Å (av); Mo-O(hydroxyl), 2.021 Å (av); Mo-O(α-carboxyl), 2.1290 Å (av) and Mo-O(β-carboxyl), 2.268(av) Å. IR spectrum is in agreement with the structure.</div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 10","pages":"Pages 745-756"},"PeriodicalIF":0.0,"publicationDate":"1998-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(99)80014-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90048812","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

Structural characterization of ZnLiNbO4 ZnLiNbO4的结构表征

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-11-01 DOI: 10.1016/S0992-4361(99)80011-3

M. Ferriol, S. Lecocq

引用次数: 9

Neutron structure of strontium pentacyanonitrosylferrate(II) tetrahydrate below the 153 K phase transition 153k相变下四水合物五氰硝基高铁酸锶(II)的中子结构

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-11-01 DOI: 10.1016/S0992-4361(99)80007-1

G. Chevrier, A. Navaza, J.-M. Kiat , J.A. Güida

引用次数: 2

Phase diagram for the system Bi2O3CaOSrOCuO in the SrO-rich region 富SrO区Bi2O3CaOSrOCuO体系相图

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-09-01 DOI: 10.1016/S0992-4361(99)80021-6

B.V. Slobodin, V.G. Vassiliev, E.E. Soldatova

引用次数: 1

Synthesis, crystal structure and low-temperature X-ray investigations of K3Cu8Se6 K3Cu8Se6的合成、晶体结构及低温x射线研究

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-09-01 DOI: 10.1016/S0992-4361(99)80019-8

C. Näther , D. Röhnert , W. Bensch

{"title":"Synthesis, crystal structure and low-temperature X-ray investigations of K3Cu8Se6","authors":"C. Näther , D. Röhnert , W. Bensch","doi":"10.1016/S0992-4361(99)80019-8","DOIUrl":"10.1016/S0992-4361(99)80019-8","url":null,"abstract":"<div>The new ternary mixed-valent copper selenide K3Cu8Se6 has been prepared by the reaction of elemental copper with K2Se3 and additional selenium (molar ratio 1: 3: 1) at 623 K. The compound crystallizes in the monoclinic space group C2/m and is isotypic to K3Cu8S6, RbCu8S6, Rb3Cu8Se6 and Cs3Cu8Se6. The structure consists of <math><mtext>1</mtext><mtext>∞</mtext></math>[Cu8Se6] layers which are separated by the potassium cations. The copper atoms are either tetrahedrally distorted or trigonal planar coordinated by the selenium atoms. In the crystal structure the trigonal planar coordinated Cu atoms form double chains which are running parallel to the b-axis. These double chains are connected into layers via the distorted CuSe4 tetrahedra which share edges and corners with the Se3 triangles around Cu. In this part of the structure a very short Cu-Cu distances of only 2.497 (2) Å appears which is shorter than the Cu-Cu distance in elemental copper. Because the tetrahedrally coordinated copper ions exhibit unusual large anisotropic displacement parameters at room temperature, a low-temperature structure determination was performed. At low temperatures the anisotropic displacement coefficients are significantly smaller for all atoms, but even at 150 K some coefficients for the tetrahedrally coordinated Cu atoms are twice as large as for the trigonal planar coordinated Cu centers. However, the experiment shows that the nature of the disorder seems to be predominantly due to an enlarged mobility of the copper ions at room-temperature which is freezed on cooling. Our give no hints for the formation of a superstructure like in K3Cu8S6.</div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 8","pages":"Pages 565-577"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(99)80019-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83041358","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: 8

Tetraaquabis(pyridine)metal(II) saccharinate tetrahydrate, [M(H2O)4(py)2](sac)2·4H2O★; M = Co, Ni. Crystal structure determination 四水合(吡啶)金属(II)糖化四水合物，[M(H2O)4(py)2](sac)2·4H2O★;M = Co, Ni。晶体结构测定

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-09-01 DOI: 10.1016/S0992-4361(99)80020-4

G. Jovanovski, P. Naumov, O. Grupcče, B. Kaitner

{"title":"Tetraaquabis(pyridine)metal(II) saccharinate tetrahydrate, [M(H2O)4(py)2](sac)2·4H2O★; M = Co, Ni. Crystal structure determination","authors":"G. Jovanovski, P. Naumov, O. Grupcče, B. Kaitner","doi":"10.1016/S0992-4361(99)80020-4","DOIUrl":"10.1016/S0992-4361(99)80020-4","url":null,"abstract":"<div>The crystal structure determination of the title compounds showed that they are isomorphous, revealing the general formula [M(H2O)4(py)2](sac)2·4H2O. Their structures are built up of [M(H2O)4(py)2]2+ cations, saccharinato anions and non-coordinated water molecules. The metal atom lies on the inversion center and is octahedrally coordinated by four water oxygens and two pyridine nitrogen atoms. The crystal structure packing is achieved through the hydrogen bonds of Ow⋯Ow, Ow⋯O and Ow⋯N type. Coordinated water molecules are hydrogen bonded to non-coordinated ones at the same time participating in hydrogen bonding with carbonyl oxygen and nitrogen atom from the saccharinato anions. Non-coordinated water molecules participate in hydrogen bonding with the oxygen atoms belonging to the saccharinato CO and SO2 groups. The hydrogen bond network between the oxygen atoms belonging to the SO2 group of the saccharinato anions and one of the non-coordinated water molecules (OW3) constructs the centrosymmetric cavity in the structure.</div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 8","pages":"Pages 579-590"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(99)80020-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88383102","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: 21

Synthesis and structure of Mu-4, the new layered aluminophosphate [(C2H5)2NH2]4[Al8P10O40H2]·[H2O]2.5 新型层状磷酸铝[(C2H5)2NH2]4[Al8P10O40H2]·[H2O]2.5的合成与结构

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-09-01 DOI: 10.1016/S0992-4361(99)80018-6

L. Vidal , V. Gramlich , J. Patarin , Z. Gabelica

{"title":"Synthesis and structure of Mu-4, the new layered aluminophosphate [(C2H5)2NH2]4[Al8P10O40H2]·[H2O]2.5","authors":"L. Vidal , V. Gramlich , J. Patarin , Z. Gabelica","doi":"10.1016/S0992-4361(99)80018-6","DOIUrl":"10.1016/S0992-4361(99)80018-6","url":null,"abstract":"<div>The title compound (named Mu-4) is a new layered aluminophosphate with a unusual A1/P ratio for this kind of materials. Mu-4 was obtained from a quasi non-aqueous mixture involving mainly diethylformamide (DEF) as solvent, in addition to limited amounts of water. DEF is decomposed during the synthesis and the resulting protonated diethylamine is occluded in the as-synthesized material. The crystal structure was determined by single crystal X-ray diffraction. The symmetry is triclinic, a=8.632(4) Å, b=9.267(7) Å, c= 17.461(10) Å, α=86.66(5)°, β=82.20(4)° and γ=89.28(5)°, space group P-1. The structure consists of anionic double sheets essentially built from double 4-ring (D4R) units. The inorganic layers are in strong interaction with water and the protonated amine which is located in the interlayer spacing. Another type of diethylamine protrudes into the 8-membered rings (8-MR) present in the layers. The characterization of this new aluminophosphate by 13C, 27Al and 31P solid state NMR spectroscopy is also reported.</div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 8","pages":"Pages 545-563"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(99)80018-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77928407","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: 38

Lattice vibration spectra. Part XCV. Infrared spectroscopic studies on the iron oxide hydroxides goethite (α), akaganéite (β), lepidocrocite (γ), and feroxyhite (δ) 晶格振动谱。XCV一部分。氧化铁氢氧化物针铁矿(α)、阿卡甘萨梅铁矿(β)、绢云母矿(γ)和氧化亚铁铁矿(δ)的红外光谱研究

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-09-01 DOI: 10.1016/S0992-4361(99)80017-4

B. Weckler, H.D. Lutz

{"title":"Lattice vibration spectra. Part XCV. Infrared spectroscopic studies on the iron oxide hydroxides goethite (α), akaganéite (β), lepidocrocite (γ), and feroxyhite (δ)","authors":"B. Weckler, H.D. Lutz","doi":"10.1016/S0992-4361(99)80017-4","DOIUrl":"10.1016/S0992-4361(99)80017-4","url":null,"abstract":"<div>Infrared spectra (IR, FIR, DRIFT, 90 and 295 K) and DSC measurements of the various polymorphs of iron oxide hydroxide, viz. goethite (α), akaganéite (β), lepidocrocite (γ), and feroxyhite (δ), and of deuterated specimens are reported. They are discussed with respect to the crystal structures proposed in the literature, the hydrogen bonds present, the energies of the OH stretching, OH bending (librational), and translational modes, and their thermal decomposition. From the two space groups proposed for β- and γ-FeO(OH), the groups I4/m and Cmc21, respectively, seem to be more reliable. The disorder of the OH− ions of γ-FeO(OH) has not been confirmed in contrast to that of δ-FeO(OH). The intraionic O(H,D) distances of γ- and δ-FeO(OH) derived from neutron powder diffraction studies have to be doubted. The greater strength of the OHOH hydrogen bonds of lepidocrocite, for example, compared to that of the OHO hydrogen bonds of goethite despite the larger hydrogen bond acceptor capability of O2− is due to the strong cooperativity of the hydrogen bonds of the γ-polymorph. The extremely different strength of the hydrogen bonds of isostructural α-AlO(OH) (vOH = 2950 cm−1, 295 K), α-MnO(OH) (vOH = 2686 cm−1), and α-FeO(OH) (vOH = 3130 cm−1) is caused by the different synergetic effect of the metal ions involved, especially that of Mn3+ due to its Jahn-Teller behaviour. The decomposition temperatures and heats of the various FeO(OH) modifications as well as the halfwidths of the DSC peaks evidence a much faster decomposition rate of akaganéite than those of the other polymorphs. This is obviously due to the Cl− ion impurities present in this compound.</div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 8","pages":"Pages 531-544"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(99)80017-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84601787","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: 173