Search results for: Sergey V. Krivovichev

Items from 1 to 20 out of 97 results

article

The role of local heteropolyhedral substitutions in the stoichiometry, topological characteristics and ion‐migration paths in the eudialyte‐related structures: a quantitative analysis

Sergey M. Aksenov, Natalia A. Kabanova, Nikita V. Chukanov, Taras L. Panikorovskii, more

Acta Crystallographica Section B > 78 > 1 > 80 - 90

Topological analysis of the heteropolyhedral MT framework (where M and T are octahedral and tetrahedral cations, respectively) in the eudialyte‐type structure and its derivatives was performed based on a natural tiling analysis of the 3D cation. To analyze the migration paths of sodium cations in these structures, the Voronoi method was used. The parental eudialyte‐type MT framework is formed by isolated...

article

Correspondence on “K₂Sb(P₂O₇)F: Cairo Pentagonal Layer with Bifunctional Genes Reveal Optical Performance”

Sergey V. Krivovichev, Luca Bindi

Angewandte Chemie > 133 > 8 > 3898 - 3899

Compounds with the fresnoite structure type possess remarkable chemical diversity and a range of unique physical properties, including nonlinear optical (NLO) activity. K₂Sb(P₂O₇)F, which was reported recently, belongs to this group and its structure is not novel in terms of either the topology or local coordination geometry around the Sb³⁺ cations. The crystallographic disorder observed in the fresnoite‐type...

article

Correspondence on “K₂Sb(P₂O₇)F: Cairo Pentagonal Layer with Bifunctional Genes Reveal Optical Performance”

Sergey V. Krivovichev, Luca Bindi

Angewandte Chemie International Edition > 60 > 8 > 3854 - 3855

article

Polyoxometalate clusters in minerals: review and complexity analysis

Sergey V. Krivovichev

Acta Crystallographica Section B > 76 > 4 > 618 - 629

Most research on polyoxometalates (POMs) has been devoted to synthetic compounds. However, recent mineralogical discoveries of POMs in mineral structures demonstrate their importance in geochemical systems. In total, 15 different types of POM nanoscale‐size clusters in minerals are described herein, which occur in 42 different mineral species. The topological diversity of POM clusters in minerals...

article

Structural Models of Inorganic Crystals. From the Elements to the Compounds. By Ángel Vegas. Editorial Universitat Politècnica de València. 2018. Hardback, Pp. xxviii+444. Price Euro 99. ISBN 9788490486023

Sergey V. Krivovichev

Acta Crystallographica Section B > 76 > 2 > 292 - 293

article

Rb₂CaCu₆(PO₄)₄O₂, a novel oxophosphate with a shchurovskyite‐type topology: synthesis, structure, magnetic properties and crystal chemistry of rubidium copper phosphates

Sergey M. Aksenov, Elena Yu. Borovikova, Vladimir S. Mironov, Natalia A. Yamnova, more

Acta Crystallographica Section B > 75 > 5 > 903 - 913

Single crystals of Rb₂CaCu₆(PO₄)₄O₂ were synthesized by a hydrothermal method in the multicomponent system CuCl₂–Ca(OH)₂–RbCl–B₂O₃–Rb₃PO₄. The synthesis was carried out in the temperature range from 690 to 700 K and at the general pressure of 480–500 atm [1 atm = 101.325 kPa] from the mixture in the molar ratio 2CuO:CaO:Rb₂O:B₂O₃:P₂O₅. The crystals studied by single‐crystal X‐ray analysis were found...

article

High‐temperature Fe oxidation coupled with redistribution of framework cations in lobanovite, K₂Na(Fe²⁺₄Mg₂Na)Ti₂(Si₄O₁₂)₂O₂(OH)₄ – the first titanosilicate case

Elena S. Zhitova, Andrey A. Zolotarev, Frank C. Hawthorne, Sergey V. Krivovichev, more

Acta Crystallographica Section B > 75 > 4 > 578 - 590

The high‐temperature (HT) behaviour of lobanovite, K₂Na(Fe²⁺₄Mg₂Na)Ti₂(Si₄O₁₂)₂O₂(OH)₄, was studied using in situ powder X‐ray diffraction in the temperature range 25–1000°C and ex situ single‐crystal X‐ray diffraction of 17 crystals quenched from different temperatures. HT iron oxidation associated with dehydroxylation starts at 450°C, similar to other ferrous‐hydroxy‐rich heterophyllosilicates such...

article

Introduction to the special issue on mineralogical crystallography

Sergey V. Krivovichev, Janusz Lipkowski, Stuart J. Mills

Acta Crystallographica Section B > 74 > 6 > 467 - 469

article

Jahn–Teller distortion and thermal expansion anisotropy: temperature-dependent behavior of lindgrenite, Cu₃(MoO₄)₂(OH)₂, szenicsite, Cu₃(MoO₄)(OH)₄, and cupromolybdite, Cu₃O(MoO₄)₂

Reseda M. Ismagilova, Elena S. Zhitova, Andrey A. Zolotarev, Sergey V. Krivovichev

Physics and Chemistry of Minerals > 2019 > 46 > 5 > 437-447

Thermal behavior of three copper molybdates, lindgrenite, Cu₃(MoO₄)₂(OH)₂, szenicsite Cu₃(MoO₄)(OH)₄, and cupromolybdite, Cu₃O(MoO₄)₂, has been studied by high-temperature X-ray powder diffraction in the temperature range of 25–900 °C. The decomposition of lindgrenite and formation of cupromolybdite were observed at T > 325 °C according to the reaction: Cu₃(MoO₄)₂(OH)₂ → Cu₃O(MoO₄)₂ + H₂O. Szenicsite...

article

Murashkoite, FeP, a new terrestrial phosphide from pyrometamorphic rocks of the Hatrurim Formation, South Levant

Sergey N. Britvin, Yevgeny Vapnik, Yury S. Polekhovsky, Sergey V. Krivovichev, more

Mineralogy and Petrology > 2019 > 113 > 2 > 237-248

Murashkoite, FeP, is a new mineral found in pyrometamorphic rocks of the Hatrurim Formation, South Levant. It is a typical accessory phase in the marbles and paralavas in the southern Negev Desert, Israel and on the Transjordan Plateau, Jordan. Murashkoite occurs as grains and aggregates up to 2 mm closely associated with barringerite, (Fe,Ni)₂P, and zuktamrurite, FeP₂. The rock-forming minerals include...

article

Zuktamrurite, FeP₂, a new mineral, the phosphide analogue of löllingite, FeAs₂

Sergey N. Britvin, Mikhail N. Murashko, Yevgeny Vapnik, Yury S. Polekhovsky, more

Physics and Chemistry of Minerals > 2019 > 46 > 4 > 361-369

Zuktamrurite, FeP₂, is a new mineral, a natural iron diphosphide found in the pyrometamorphic rocks of the Hatrurim Formation, in the southern part of the Negev Desert, Israel and on the Transjordan Plateau, Jordan. The mineral occurs as irregular grains up to 50 µm in size associated with murashkoite, FeP, and barringerite, (Fe,Ni)₂P. In reflected light, zuktamrurite is white with a distinct bluish...

article

Site-selective As–P substitution and hydrogen bonding in the crystal structure of philipsburgite, Cu₅Zn((As,P)O₄)₂(OH)₆·H₂O

Sergey V. Krivovichev, Elena S. Zhitova, Rezeda M. Ismagilova, Andrey A. Zolotarev

Physics and Chemistry of Minerals > 2018 > 45 > 10 > 917-923

Philipsburgite, Cu₅Zn((As,P)O₄)₂(OH)₆·H₂O, from the Middle Pit, Gold Hill Mine, Tooele Co., Utah, USA, was studied by single-crystal X-ray diffraction and scanning electron microscopy. The empirical formula of the studied sample is (Cu_4.69Zn_1.23)(As_0.86P_0.18O₄)₂(OH)_5.61·H₂O, which agrees well with the previous reports on the mineral. Philipsburgite is monoclinic, P2₁/c, a = 12.385(6), b = 9.261(4),...

article

Oxocentered Units in Three Novel Rb‐Containing Copper Compounds Prepared by CVT Reaction Method

Ilya V. Kornyakov, Sergey V. Krivovichev, Vladislav V. Gurzhiy

Zeitschrift für anorganische und allgemeine Chemie > 644 > 2 > 77 - 81

Three novel copper compounds, Rb₄Cu₄OCl₁₀ (I), Rb[Cu₃O](SeO₃)₂Cl (II), and RbCu₃(OH)(SeO₃)Cl₄(H₂O)₃ (III) were prepared by chemical vapor transport (CVT) reactions method from mixtures of CuO, SeO₂, RbCl, and CuCl₂. The crystal structures of the three compounds were determined by direct methods. Compound I is a Rb analogue of ponomarevite, K₄Cu₄OCl₁₀. Its crystal structure contains {[OCu₄]Cl₁₀}^4–...

article

Ring opening of azetidine cycle: First examples of 1-azetidinepropanamine molecules as a template in hybrid organic-inorganic compounds

Vladislav V. Gurzhiy, Olga S. Tyumentseva, Sergey N. Britvin, Sergey V. Krivovichev, more

Journal of Molecular Structure > 2018 > 1151 > C > 88-96

Three novel uranyl selenate and sulfate oxysalts templated by protonated azetidine molecules, [AzH]⁺, and its ring-opened counterpart 1-azetidinepropanamine, [AzH(CH₂)₃NH₃]²⁺, have been prepared and studied by X-ray structural analysis. Conformations of azetidinium cations were analysed by means of infrared vibrational assignments supported by the DFT calculations. Crystallization of [AzH]₂ [(UO₂)...

article

Batagayite, CaZn₂(Zn,Cu)₆(PO₄)₄(PO₃OH)₃·12H₂O, a new phosphate mineral from Këster tin deposit (Yakutia, Russia): occurrence and crystal structure

Victor N. Yakovenchuk, Yakov A. Pakhomovsky, Nataliya G. Konopleva, Taras L. Panikorovskii, more

Mineralogy and Petrology > 2018 > 112 > 4 > 591-601

Batagayite, CaZn₂(Zn,Cu)₆(PO₄)₄(PO₃OH)₃·12H₂O, is a new secondary phosphate mineral from the Këster deposit, Arga-Ynnykh-Khai massif, NE Yakutia, Russia. It is monoclinic, P2₁, a = 8.4264(4), b = 12.8309(6), c = 14.6928(9) Å, β = 98.514(6)^o, V = 1571.05(15) Å³ and Z = 2 (from single-crystal X-ray diffraction data). Batagayite crystals are blades up to 2 mm long, flattened on {001} and elongated on...

article

Temperature-induced iron oxidation in bafertisite Ba₂Fe 4 2 + ${}_{4}^{2+}$ Ti₂(Si₂O₇)₂O₂(OH)₂F₂: X-ray diffraction and Mössbauer spectroscopy study

Elena S. Zhitova, Andrey A. Zolotarev, Sergey V. Krivovichev, Alexey G. Goncharov, more

Hyperfine Interactions > 2017 > 238 > 1 > 1-12

The high-temperature behavior of bafertisite was studied by combination of techniques in order to characterize the temperature-induced iron oxidation associated with deprotonation of an octahedral layer. The chemical formula of bafertisite from Darai-Pioz alkaline complex (Tajikistan) determined by electron-microprobe analyzes and Mössbauer spectroscopy is Ba _2.11(Fe 2.70 2 + ${}_{2.70}^{2+}$ ...

article

Kampelite, Ba₃Mg_1.5Sc₄(PO₄)₆(OH)₃·4H₂O, a new very complex Ba-Sc phosphate mineral from the Kovdor phoscorite-carbonatite complex (Kola Peninsula, Russia)

Victor N. Yakovenchuk, Gregory Yu. Ivanyuk, Yakov A. Pakhomovsky, Taras L. Panikorovskii, more

Mineralogy and Petrology > 2018 > 112 > 1 > 111-121

Kampelite, Ba₃Mg_1.5Sc₄(PO₄)₆(OH)₃·4H₂O, is a new Ba-Sc phosphate from the Kovdor phoscorite-carbonatite complex (Kola Peninsula, Russia). It is orthorhombic, Pnma, a = 11.256(1), b = 8.512(1), c = 27.707(4) Å, V = 2654.6(3) Å³ and Z = 4 (from powder diffraction data) or a = 11.2261(9), b = 8.5039(6), c = 27.699(2) Å, V = 2644.3(3) Å³ (from single-crystal diffraction data). The mineral was found in...

article

X-ray diffraction and spectroscopic study of wiluite: implications for the vesuvianite-group nomenclature

Taras L. Panikorovskii, Anton S. Mazur, Ayya V. Bazai, Vladimir V. Shilovskikh, more

Physics and Chemistry of Minerals > 2017 > 44 > 8 > 577-593

Two wiluite samples from the Wiluy River, Yakutia, Russia have been investigated by means of single-crystal and powder X-ray diffraction, electron microprobe analysis, ¹H, ²⁷Al, ¹¹B, and ²⁹Si magic-angle spinning nuclear magnetic resonance (MAS NMR), thermogravimetric analysis (DSC/TGA), X-ray photoelectron spectroscopy (XPS) at the Si2p, Ca2p, Al2p, Mg1s, B1s and Fe2p core levels, ⁵⁷Fe Mössbauer...

article

Selective Se-for-S substitution in Cs-bearing uranyl compounds

Vladislav V. Gurzhiy, Olga S. Tyumentseva, Sergey V. Krivovichev, Ivan G. Tananaev

Journal of Solid State Chemistry > 2017 > 248 > C > 126-133

Phase formation in the mixed sulfate-selenate aqueous system of uranyl nitrate and cesium nitrate has been investigated. Two types of crystalline compounds have been obtained and characterized using a number of experimental (single crystal XRD, FTIR, SEM) and theoretical (information-based complexity calculations, topological analysis) techniques. No miscibility gaps have been observed for Cs₂[(UO...

article

High-temperature behaviour of astrophyllite, K₂NaFe₇²⁺Ti₂(Si₄O₁₂)₂O₂(OH)₄F: a combined X-ray diffraction and Mössbauer spectroscopic study

Elena S. Zhitova, Sergey V. Krivovichev, Frank C. Hawthorne, Maria G. Krzhizhanovskaya, more

Physics and Chemistry of Minerals > 2017 > 44 > 8 > 595-613

High-temperature X-ray powder-diffraction study of astrophyllite, K₂NaFe₇²⁺Ti₂(Si₄O₁₂)₂O₂(OH)₄F, and investigation of the samples annealed at 600 and 700 °C, reveal the occurrence of a phase transformation due to the thermal iron oxidation coupled with (1) deprotonation according to the scheme Fe²⁺ + OH⁻ → Fe³⁺ + O²⁻ + ½H₂ ↑, and (2) defluorination according to the scheme Fe²⁺ + F⁻ → Fe³⁺ + O²⁻. The...

Publication date

Last 3 years (1)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Data set

Elsevier (38)
Springer (26)
Wiley (26)
ACS (7)

Journal

Journal of Solid State Chemistry (17)
Mineralogy and Petrology (10)
Acta Crystallographica Section B (7)
Physics and Chemistry of Minerals (7)
Zeitschrift für anorganische und allgemeine Chemie (7)
Microporous and Mesoporous Materials (6)
Structural Chemistry (5)
Angewandte Chemie (4)
Angewandte Chemie International Edition (4)
European Journal of Inorganic Chemistry (4)
Inorganic Chemistry (4)
Inorganic Chemistry Communications (3)
Journal of Alloys and Compounds (3)
Mendeleev Communications (3)
Solid State Sciences (3)
Journal of the American Chemical Society (2)
Comptes rendus - Chimie (1)
Crystal Growth & Design (1)
Hyperfine Interactions (1)
Journal of Crystal Growth (1)
Journal of Molecular Structure (1)
Journal of Radioanalytical and Nuclear Chemistry (1)
more

INFONA - science communication portal

Search results for: Sergey V. Krivovichev

The role of local heteropolyhedral substitutions in the stoichiometry, topological characteristics and ion‐migration paths in the eudialyte‐related structures: a quantitative analysis

Correspondence on “K₂Sb(P₂O₇)F: Cairo Pentagonal Layer with Bifunctional Genes Reveal Optical Performance”

Correspondence on “K₂Sb(P₂O₇)F: Cairo Pentagonal Layer with Bifunctional Genes Reveal Optical Performance”

Polyoxometalate clusters in minerals: review and complexity analysis

Structural Models of Inorganic Crystals. From the Elements to the Compounds. By Ángel Vegas. Editorial Universitat Politècnica de València. 2018. Hardback, Pp. xxviii+444. Price Euro 99. ISBN 9788490486023

Rb₂CaCu₆(PO₄)₄O₂, a novel oxophosphate with a shchurovskyite‐type topology: synthesis, structure, magnetic properties and crystal chemistry of rubidium copper phosphates

High‐temperature Fe oxidation coupled with redistribution of framework cations in lobanovite, K₂Na(Fe²⁺₄Mg₂Na)Ti₂(Si₄O₁₂)₂O₂(OH)₄ – the first titanosilicate case

Introduction to the special issue on mineralogical crystallography

Jahn–Teller distortion and thermal expansion anisotropy: temperature-dependent behavior of lindgrenite, Cu₃(MoO₄)₂(OH)₂, szenicsite, Cu₃(MoO₄)(OH)₄, and cupromolybdite, Cu₃O(MoO₄)₂

Murashkoite, FeP, a new terrestrial phosphide from pyrometamorphic rocks of the Hatrurim Formation, South Levant

Zuktamrurite, FeP₂, a new mineral, the phosphide analogue of löllingite, FeAs₂

Site-selective As–P substitution and hydrogen bonding in the crystal structure of philipsburgite, Cu₅Zn((As,P)O₄)₂(OH)₆·H₂O

Oxocentered Units in Three Novel Rb‐Containing Copper Compounds Prepared by CVT Reaction Method

Ring opening of azetidine cycle: First examples of 1-azetidinepropanamine molecules as a template in hybrid organic-inorganic compounds

Batagayite, CaZn₂(Zn,Cu)₆(PO₄)₄(PO₃OH)₃·12H₂O, a new phosphate mineral from Këster tin deposit (Yakutia, Russia): occurrence and crystal structure

Temperature-induced iron oxidation in bafertisite Ba₂Fe 4 2 + ${}_{4}^{2+}$ Ti₂(Si₂O₇)₂O₂(OH)₂F₂: X-ray diffraction and Mössbauer spectroscopy study

Kampelite, Ba₃Mg_1.5Sc₄(PO₄)₆(OH)₃·4H₂O, a new very complex Ba-Sc phosphate mineral from the Kovdor phoscorite-carbonatite complex (Kola Peninsula, Russia)

X-ray diffraction and spectroscopic study of wiluite: implications for the vesuvianite-group nomenclature

Selective Se-for-S substitution in Cs-bearing uranyl compounds

High-temperature behaviour of astrophyllite, K₂NaFe₇²⁺Ti₂(Si₄O₁₂)₂O₂(OH)₄F: a combined X-ray diffraction and Mössbauer spectroscopic study

Filter options

Publication date

Publication type

Publication language

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Sergey V. Krivovichev

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Publication language

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options