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  • 1
    Electronic Resource
    Electronic Resource
    Diiodo(3,4,5,6-tetrahydropyrimidinium-2-thiolato-S)mercury(II) (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 409-411 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The reaction of 3,4,5,6-tetrahydropyrimidine-2-thione (H4pymtH) with mercury(II) iodide in methanol in a 1:1 molar ratio resulted in the formation of single crystals of the title compound, [Hg(C4H8N2S)I2]. The Hg atom is coordinated by one S atom from H4pymtH at 2.456 (2) Å and by two I atoms at distances of 2.6872 (7) and 2.7044 (6) Å, and has a characteristic deformed trigonal coordination geometry. The molecule has crystallographic m symmetry but the Hg atom is disordered above and below the mirror plane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101001822
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  • 2
    Electronic Resource
    Electronic Resource
    From α-carbamoyl-α-cyanooxiranes to 3-halogenopyruvamides (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 1164-1167 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The crystal structures of the first stable α-diol from the α-halogenopyruvamide series, 3-chloro-2,2-dihydroxy-3-phenylpropanamide, C9H10ClNO3, and three products [3-(4-chlorophenyl)-2-cyano-2,3-epoxypropanamide, C10H7ClN2O2, 3-bromo-2-cyano-2-hydroxy-3-p-tolylpropanamide, C11H11BrN2O2, 3-bromo-2-oxo-3-p-tolylpropanamide, C10H10BrNO2] obtained during the systematic synthesis of α-halogenopyruvamides are reported. The crystal structures are dominated by hydrogen bonds involving an amide group. The stability of the geminal diol could be ascribed to hydrogen bonds which involve both hydroxyl groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100008623
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  • 3
    Electronic Resource
    Electronic Resource
    The polyoxometallate [(CH3)4N]2[Mo4O10(OCH3)4Cl2] (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. e443-e444 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The crystal and molecular structure of bis(tetramethylammonium) dichlorotetra-μ2-methoxo-di-μ2-oxo-octooxotetramolybdate(VI), (C4H12N)2[Mo4O10(OCH3)4Cl2], has been determined from X-ray diffraction data. The crystallographically centrosymmetric anion is built up of four edge-sharing octahedra, two MoO6 and two MoO5Cl.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100012233
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  • 4
    Electronic Resource
    Electronic Resource
    A decanuclear oxomolybdenum(V,VI) cluster with 4-isopropylpyridine (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 246-247 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title centrosymmetric cluster octakis(4-isopropylpyridine-N)-di-μ4-oxo-hexa-μ3-oxo-octa-μ2-oxo-decaoxooctamolybdenum(V)dimolybdenum(VI), [Mo10O26(C8H11N)8], consists of ten Mo atoms connected together by bridging oxo groups. Pentavalent Mo atoms are linked into four Mo2V pairs by metal–metal single bonds with lengths of 2.5637 (6) and 2.6132 (6) Å.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100017303
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  • 5
    Electronic Resource
    Electronic Resource
    Methyl {1-[2,3-O-isopropylidene-5-O-(4-nitrobenzoyl)-α-D-ribofuranosyl]-4-methoxycarbonyl-1H-1,2,3-triazol-5-yl}acetate (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 890-891 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: In the title compound, C22H24N4O11, the N-glycosidic torsion angles O′—C′—N—C and O′—C′—N—N are −34.1 (6) and 148.8 (3)°, respectively. The molecule displays an α-D configuration with the ribofuranose moiety in an O′-exo–C′-endo pucker. There are only weak C—H...O and C—H...N intra- and intermolecular interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100005394
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  • 6
    Electronic Resource
    Electronic Resource
    Bis(tetramethylammonium) hexamolybdate hydrate, [(CH3)4N]2[Mo6O19]·H2O (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. e278-e279 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The crystal and molecular structure of the title compound, (C4H12N)2[Mo6O19]·H2O, has been determined from X-ray diffraction data. The polyoxoanion [Mo6O19]2− is built up from six distorted MoO6 octahedra sharing common edges and one common vertex at the central O atom, and has crystallographic m3m (Oh) symmetry. The cation has crystallographic \overline 43m symmetry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100007630
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  • 7
    Electronic Resource
    Electronic Resource
    Two dimeric CuII benzoate derivatives solvated with acetonitrile (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 546-548 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title compounds, tetrakis(μ-benzoato-O:O′)bis(2,6-diaminopyridine)-1κN,2κN-dicopper(II)–acetonitrile (1/2), [Cu2(C7H5O2)4(C5H7N3)2]·2C2H3N, (I), and bis(acetonitrile)-1κN,2κN-tetrakis(μ-benzoato-O:O′)dicopper(II)–acetonitrile (1/1.5), [Cu2(C7H5O2)4(C2H3N)2]·1.5C2H3N, (II), crystallize as acetonitrile solvates exhibiting different stability. They have similar molecular structures with discrete dimeric units located at crystallographic inversion centres. The copper ions are bridged by four benzoate groups and neutral N-donor ligands, viz. 2,6-diaminopyridine in (I) and acetonitrile in (II), are coordinated at apical positions. The diverse stability is probably due to hydrogen-bond interactions of the solvated acetonitrile molecules with neighbouring dimers in compound (I).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101003183
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  • 8
    Electronic Resource
    Electronic Resource
    LiFe3+(Se2O5)2 and its structure relationships toMe 2+(Se2O5) compounds (1993)
    Springer
    Monatshefte für Chemie 124 (1993), S. 1107-1113 
    Details
    ISSN: 1434-4475
    Keywords: LiFe3+(Se2O5)2 ; Crystal structure ; Crystal chemistry ; Hydrothermal synthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die hydrothermal dargestellte Verbindung LiFe3+(Se2O5)2 wurde mittels Einkristallbeugungsmethoden untersucht:a=5.987(2)Å,b=6.760(2)Å,c=10.295(3)Å,V=416.66Å3;Z=2, Raumgruppe Pnc2,R=0.028,R w=0.028 für 2002 unabhängige Reflexe (sin ϑ/λ≤0.90Å−1). Die Kristallstruktur von LiFe3+(Se2O5)2 zeigt eine enge Verwandtschaft mit der vonMe 2+(Se2O5)-Verbindungen (Me=Mn, Co, Zn).
    Notes: Summary LiFe3+(Se2O5)2 was obtained by hydrothermal synthesis and the structure was investigated by single crystal X-ray diffraction methods:a=5.987(2)Å,b=6.760(2)Å,c=10.295(3)Å,V=416.66Å3;Z=2, space group Pnc2,R=0.028,R w=0.028 for 2002 independent reflections (sinϑ/λ≤0.90Å−1). The crystal structure of LiFe3+(Se2O5)2 is closely related with that ofMe 2+(Se2O5) compounds (Me=Mn, Co, Zn).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810018
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  • 9
    Electronic Resource
    Electronic Resource
    Crystal structure of synthetic Cu3SeO4(OH)4 (1991)
    Springer
    Monatshefte für Chemie 122 (1991), S. 229-234 
    Details
    ISSN: 1434-4475
    Keywords: Cu3SeO4(OH)4 ; Antlerite type structure ; Hydrothermal synthesis ; Crystal chemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Kristallstruktur von synthetischem Cu3SeO4(OH)4 wurde mittels Einkristall-Röntgenmethoden ermittelt:a=8.382 (2) Å,b=6.087 (1) Å,c=12.285 (2) Å,V=626.8 Å3,Z=4, Raumgruppe Pnma,R=0.026,R w =0.021 für 1255 unabhängige Reflexe (sin ϑ/λ ⩽0.8 Å−1). Die Kristallstruktur ist isotyp mit der des Minerals Antlerit, Cu3SO4(OH)4. Die Kupferatome sind Jahn-Teller-verzerrt, die Cu[4+2]O6 Polyeder bilden Dreierketten entlang [010]. Diese Ketten sind über SeO4-Tetraeder und schwache Wasserstoffbrücken zu einer Gerüststruktur verbunden.
    Notes: Summary The crystal structure of synthetic Cu3SeO4(OH)4 was determined by single crystal X-ray methods:a=8.382 (2) Å,b=6.087 (1) Å,c=12.285 (2) Å,V=626.8 Å3,Z=4, space group Pnma,R=0.026,R w =0.021 for 1255 independent reflections (sin ϑ/λ ⩽0.8 Å−1). The crystal structure is isotypic to that of the mineral antlerite, Cu3SO4(OH)4. The copper atoms are Jahn-Teller distorted with Cu[4+2]O6 polyhedra forming triple chains along [010]. These chains are linked via SeO4 tetrahedra and weak hydrogen bonds to a framework structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810821
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  • 10
    Electronic Resource
    Electronic Resource
    Synthesis and crystal structure of monoclinic Fe2(SeO4)3 (1991)
    Springer
    Monatshefte für Chemie 122 (1991), S. 617-623 
    Details
    ISSN: 1434-4475
    Keywords: Fe2(SeO4)3 ; Anhydrous ferric selenate(VI) ; Crystal structure ; Crystal chemistry ; Hydrothermal synthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Kristalle von monoklinem Fe2(SeO4)3 wurden unter Hydrothermalbedingungen gezüchtet. Die Struktur wurde mit Einkristall-Röntgenmethoden bestimmt und in der Raumgruppe P21/n mit 2 646 unabhängigen Reflexen (sin θ/λ〈0.7Å−1) aufR=0.033,R w=0.037 verfeinert:a=8.530(2) Å,b=8.888(2) Å,c=11.952(2) Å, β=91.13(1)°,V=906.0 Å3,Z=4. Die Kristallstruktur ist isotyp mit der monoklinen Modifikation von Fe2(SO4)3, sie enthält zwei unterschiedliche Fe(III) und drei Se(VI) Atompositionen. Die FeO6-Polyeder sind nur gering verzerrt, die mittleren Fe-O Bindungslängen sind 1.986 Å und 2.004 Å, die mittleren Abstände in den SeO4-Tetraedern sind jeweils 1.628 Å. Die isolierten FeO6-Oktaeder sind nur über gemeinsame Ecken mit SeO4-Tetraedern verbunden, wobei eine Gerüststruktur entsteht.
    Notes: Summary Crystals of monoclinic Fe2(SeO4)3 were synthesized under hydrothermal conditions. The structure was determined by single crystal X-ray methods and refined in space group P21/n with 2 646 independent reflections (sin θ/λ〈0.7 Å−1) toR=0.033,R w=0.037:a=8.530 (2) Å,b=8.888 (2) Å,c=11.952 (2) Å, β=91.13 (1)°,V=906.0 Å3,Z=4. The crystal structure is isotypic with the monoclinic modification of Fe2(SO4)3, containing two different Fe(III) and three Se(VI) atomic positions. The FeO6 and SeO4 polyhedra are only slightly distorted, the mean Fe-O bond lengths are 1.986 Å and 2.004 Å, the average distances within the SeO4 tetrahedra are each 1.628 Å. The isolated FeO6 octahedra only share corners with SeO4 tetrahedra to build a framework structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00811460
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