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AbstractAbstract
[en] Studied is the crystal structure of K3Nb(SO4)4 with the Pnma symmetry and cell parameters a=8.078, b=12.63, c=14.71A, Z=4, rhosub(exp)=2.65g/cmsup(3), rhosub(roent.)=2.66g/cmsup(3). It is island structure. Coordination polyhedron of niobium is dodecahedron, Nb-0 distances are 2.05-2.20A. All three crystallochemically independent sylfate groups are bidentat- cyclic groups. [Nb(SO4)4]3- anions are bind with potassium ions
Original Title
Struktura kristallov tetrasul'fatoniobata kaliya K3Nb(SO4)4
Primary Subject
Source
For English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Literature Type
Numerical Data
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 20(4); p. 672-677

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AbstractAbstract
[en] The non empirical calculation of equilibrium geometry and force field of the basic electron state of boron oxide molecule is carried out. For the equilibrium geometrical configuration found vertical energies of transitions into excited states, electric moments and diamagnetic susceptibility are calculated. On the basis of results obtained the comparable analysis of experimental and theoretical data for the B2O3 molecule is performed
[ru]
Original Title
Teoreticheskoe issledovanie molekuly oksida bora B2O3
Primary Subject
Source
For English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 22(1); p. 29-38

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AbstractAbstract
No abstract available
Original Title
Kristallicheskaya struktura tetragidrata selenata uranila
Source
Short note; for English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Literature Type
Numerical Data
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 22(3); p. 171-174

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AbstractAbstract
No abstract available
Original Title
Utochnenie strukturnykh parametrov molekuly CdBr2
Primary Subject
Source
Short note; for English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 21(4); p. 201-202

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AbstractAbstract
No abstract available
Original Title
Rentgenovskie fotoehlektronnye spektry sul'fidov gafniya, tantala i fol'frama
Primary Subject
Source
Short note; for English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 22(4); p. 167-169

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AbstractAbstract
[en] The 1H and 19F NMR data have been used to study hydrogen bond geometry in the CaF2x2HF, SrF2xHF, BaF2xHF hydrofluorides. Determination of structural parameters of the hydrogen bond has been carried out by means of numerical analysis of NMR line shape of polycrystal samples. It is established that boron and strontium hydrofluorides contain weakly asymmetric bifluoride ions. The bifluoride ion in calcium hydrofluoride is symmetric. The H-F and F-F distances are determined, which are (with account for oscillation ammendments), respectively. 1,143+-0,02 and 2,286+-0,004 A for CaF2x2HF, 1,O90+-0,0O7 and 2,277+-0,004A for SrF2xHF and 1,089+-0,004 and 2,301+-0,004 A for BaF2xHF
Original Title
YaMR-strukturnyj analiz vodorodnoj svyazi v gidroftoridakh shchelochnozemel'nykh metallov
Primary Subject
Source
For English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 20(5); p. 814-823

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AbstractAbstract
[en] Obtaining laminated graphite compounds (LGC) which contain both FeCl3 and MoCl5 or FeCl3 and WCl6 is described. Data on diffractometric investigation of these compounds are presented. The method of gamma-resonance spectroscopy (GR) is used to show that in LGC with FeCl3-MoCl5 iron has two form: Fe2+ and Fe3+. F2+ content in LGC rises with the increase of Mo/Fe ratio GR parameters of this form show that FeCl2 forms a joint structure with molybdenum fluoride in graphite interlayer space. FeCl2 presence in graphite may be connected with FeCl3 reduction outside graphite and its introduction into graphite at the expense of a transport reaction through gaseous complexes of the FeMo2Cl12xFeCl3 type also forms a joint structure with MoCl5 in graphite interlayer space. Formation of FeCl2 as well as joint structures between FeCl3 and WCl6 in LGC FeCl3-WCl6 does not occur
Original Title
Sintez, gamma-rezonansnye spektry i stroenie sloistykh soedinenij grafita, soderzhashchikh FeCl3 i MoCl5 ili FeCl3 i WCl6
Primary Subject
Source
For English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 20(5); p. 835-841

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AbstractAbstract
[en] Measured are relaxation times T1 and T2 of 93Nb nuclei depending on the temperature in [NbClsub(n)Brsub(6-n)]sup(-) octahedron complexes (n=0-6) that are simultaneously present in acetonitrile solution. It is found out that relaxation rate in all complexes, except cis-[NbCl3Br3]-, is determined by quadrupole interactions. In cis-[NbCl3Br3]- anion the relaxation mechanism is conditioned by exchange processes connected with intramolecular cis reversible trans-isomerization. Resonance signals were regarded as definite isomers on the basis of T1 and T2 data. Changes of diamagnetic and paramagnetic constituents of 93Nb nuclei screening constant are calculated depending on the coordination sphere composition. 93Nb chemical shifts in the [NbClsub(n)Brsub(6-n)]sup(-) series are shown to be determined by paramagnetic constituent of the screening constant
Original Title
Spinovaya relaksatsiya i magnitnoe ehkranirovanie yader 93Nb v anionakh [NbClsub(n)Brsub(6-n)]sup(-)
Primary Subject
Source
For English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 20(2); p. 274-281

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AbstractAbstract
No abstract available
Original Title
K voprosu o vliyanii khimicheskikh svyazej na ehnergeticheskij spektr CsSb
Primary Subject
Source
Short note; for English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 20(1); p. 129-132

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AbstractAbstract
[en] The semiempiric Mallikan Wolfsberg Helmholtz method has been applied to investigate the electron structure and to give the interpretation of X-ray emission spectra of RVO4 vanadates (where R=Y, Sc, Tb, Dy, Nd, Er, Eu). Calculation data and the X-ray spectra obtained show that the VO43- grouping in vanadates is isolated to a great extent
Original Title
Rentgenovskie ehmissionnye spektry komponentov i ehletkronnoe stroenie ortovanadatov ehlementov 3 gruppy; Orthovanadates of rare earths, Sc, Y
Primary Subject
Source
For English translation see the journal Journal of Structural Chemistry (USA).
Record Type
Journal Article
Journal
Zhurnal Strukturnoj Khimii; ISSN 0136-7463;
; v. 21(3); p. 41-45

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