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  • 1
    Electronic Resource
    Electronic Resource
    [Tris(2-aminoethyl)amine-κ4N]chloro(dimethyl sulfoxide-O)cobalt(III) diperchlorate (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. e388-e389 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title compound, [CoCl(tren)(dmso)](ClO4)2 [tren is tris-(2-aminoethyl)amine, C6H18N4; dmso is dimethyl sulfoxide, C2H6OS], is the first crystal structure reported with dmso coordinated to CoIII. It crystallizes with two independent molecules in the asymmetric unit. A localized non-crystallographic inversion centre is observed between the two cations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100011069
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  • 2
    Electronic Resource
    Electronic Resource
    Solid-state structures of group 1 and group 2 metal 1,5-naphthalenedisulfonates: systematic investigation of lamellar three-dimensional networks constructed by metal arenedisulfonate (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 520-530 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Seven Group 1 and Group 2 1,5-naphthalenedisulfonates (1,5-nds) have been synthesized and structurally characterized by single-crystal X-ray diffraction, IR spectroscopy and thermal gravimetric analysis. For Group 1 metal complexes, with M = Li+ (1), Na+ (2) and K+ (3), all crystallize in the same space group (P21/c) with the same composition, [M2(1,5-nds)(H2O)2]. They adopt similar three-dimensional packing arrangements with the metal–sulfonate inorganic layers pillared by naphthalene rings. However, the coordination behavior of three metal cations toward the SO_3^- group and water molecule are different, resulting in different architectures for the inorganic portion. For Group 2 complexes with M = Mg2+ (4), Ca2+ (5), Sr2+ (6) and Ba2+ (7), Mg2+ shows no direct coordination by the SO_3^- group while Ca2+ is coordinated by four SO_3^- groups and a two-dimensional network is formed. Complexes (6) and (7) are isostructural, adopting the same three-dimensional, inorganic–organic pillared framework as seen for (1)–(3). The coordination behavior of the metal cations in these structures neatly illustrates the increase in coordination strength with decreasing charge/radius ratio for Group 1 and Group 2 metal cations with large organic anions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S010876810100862X
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  • 3
    Electronic Resource
    Electronic Resource
    Structures of three cis-β1 and three cis-β2 isomers of [Co(trien)(aminoacidato)]2+ complexes (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 45-53 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The crystal structures and absolute configurations of three cis-β1 and three cis-β2 isomers of [Co(trien)(L-aminoacidato)]2+, namely β1-Λ(SSS)(λλδ)/(λδδ)-[Co(trien)(L-isoleucinato)](ClO4)2, L-isoleucinato(triethylenetetramine)cobalt(III) diperchlorate (1), β1-Λ(SRS)(λδλ)-[Co(trien)(L-valinato)](ClO4)2, L-valinato(triethylenetetramine)cobalt(III) diperchlorate (2), β1-Δ(RSS)(δλδ)-[Co(trien)(L-pyroglutamato)]ClO4, L-pyroglutamato(triethylenetetramine)cobalt(III) perchlorate (3), β2-Δ(RRS)(δδλ)-[Co(trien)(L-isoleucinato)]I2·H2O, L-isoleucinato(triethylenetetramine)cobalt(III) diiodide monohydrate (4), β2-Δ(RRS)(δδλ)-[Co(trien)(L-isoleucinato)](ClO4)2·2H2O, L-isoleucinato(triethylenetetramine)cobalt(III) diperchlorate dihydrate (5), and β2-Λ(SSS)(δλλ)[Co(trien)(L-leucinato)](ClO4)2·2H2O, L-leucinato(triethylenetetramine)cobalt(III) diperchlorate dihydrate (6), have been determined. Both β1 and β2 isomers form inter-cation hydrogen-bonding interactions through double or triple hydrogen bonds which link the cations into helices. However, the motifs of the interactions are different in β1 and β2 isomers, resulting in different packing structures. A localized hydrophobic area is observed in the packing structure of (1), a unique feature amongst these six structures. This work describes the first synthesis of the β1 isomer by direct reaction between amino acids and cis-α-[Co(trien)Cl2]Cl in mildly basic solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108768100013896
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  • 4
    Electronic Resource
    Electronic Resource
    Tris(ethylenediamine-N,N′)cobalt(III) oxalate perchlorate dihydrate (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 661-663 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The crystallization behavior of the title compound, [Co(C2H8N2)3](C2O4)(ClO4)·2H2O, has been studied in order to evaluate the effect of the counter-anion on the crystalline structures of [Co(en)3](C2O4)·X (en = ethylenediamine). Two-dimensional intermolecular hydrogen-bonding networks are formed between the amine protons of the [Co(en)3]3+ cations and the O atoms of the oxalate anions. Perchlorate and water molecules fill in the channels between the two-dimensional networks and form hydrogen-bonding interactions with the two-dimensional layers, thus constructing a three-dimensional hydrogen-bonding network.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100004200
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  • 5
    Electronic Resource
    Electronic Resource
    A supramolecular cadmium(II) complex: (1,10-phenanthroline)[tris(2-aminoethyl)amine]cadmium(II) dinitrate hydrate (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. e562-e563 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Colourless prismatic crystals of the title compound, [Cd(tren)(phen)](NO3)2·H2O [phen = 1,10-phenanthroline, C12H8N2; tren = tris(2-aminoethyl)amine, C6H18N4], form from an aqueous solution of equivalent amounts of Cd(NO3)2, tren and phen. Infinite one-dimensional polymeric zigzag motifs, constructed via alternating hydrogen-bonding and π–π interactions, are further mediated by nitrate–amine hydrogen bonds to create three-dimensional networks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100016279
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  • 6
    Electronic Resource
    Electronic Resource
    trans-(DL-Isoleucinato-N,O)[tris(2-aminoethyl)amine-κ4N]cobalt(III) diperchlorate (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 394-396 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The racemic title compound, trans-[N,N-bis(2-aminoethyl)-1,2-ethanediamine-κ4N](DL-isoleucinato-N,O)cobalt(III) diperchlorate, [Co(C6H18N4)(C6H12NO2)](ClO4)2, crystallizes in the enantiomorphous space group P212121 with Z = 12 (Z′ = 3). Each of the three cations in the asymmetric unit represents a different chirality of the isoleucine ligand; two of them are R (or D) and the third is the S (or L) enantiomer. The mixture crystallizes in a so-called unbalanced crystallization, in which the cations adopt a chiral array of composition RRS or SSR, depending on the crystal selected for data collection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101001548
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  • 7
    Electronic Resource
    Electronic Resource
    Bis(β-alaninium) biphenyl-4,4′-disulfonate (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1215-1216 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: In the crystal structure of the title compound, 2C3H8NO2+·C12H8O6S22−, N—H...O hydrogen bonds formed between the amino H atoms and the sulfonate O atoms give rise to the assembly of cationic β-alaninium dimers and centrosymmetric biphenyl-4,4′-disulfonate anions into an extended two-dimensional layer. The resulting hydrogen-bonded ribbons can be described as C{_2^2}(6)R{_4^4}(12) according to graph-set notation. C—H...O hydrogen bonds between adjacent sheets further extend the structure into a three-dimensional arrangement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101012355
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  • 8
    Electronic Resource
    Electronic Resource
    Diaquabis(ethylenediamine)copper(II) bis[tris(ethylenediamine)nickel(II)] tris(naphthalene-2,6-disulfonate) tetrahydrate (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1168-1170 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title mixed-metal compound, [Cu(C2H8N2)2(H2O)2][Ni(C2H8N2)3]2(C10H6O6S2)3·4H2O, was obtained during investigations of the porous frameworks constructed by amino-coordinated metal complex cations and large organic anions. All three naphthalene-2,6-disulfonate anions and the [Cu(en)2(H2O)2]2+ cation are located on crystallographic inversion centers and assemble into an extended two-dimensional network through intermolecular hydrogen bonds, creating cavities in which the [Ni(en)3]2+ cations and water molecules are included.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101013324
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  • 9
    Electronic Resource
    Electronic Resource
    Structures and crystallization behavior of cis-α-[Co(trien)(NO2)2]·ClO4 (I), cis-β-[Co(trien)(NO2)2]Br·2H2O (II), and cis-β-[Co(trien)(NO2)2]·ClO3 (III) (2000)
    Springer
    Journal of chemical crystallography 30 (2000), S. 27-34 
    Details
    ISSN: 1572-8854
    Keywords: conglomerate crystallization ; Co(III) coordination compounds ; counterion effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Structures, conformations, and crystallization behavior of compounds cis-α-[Co(trien)(NO2)2]·ClO4 (I), cis-β-[Co(trien)(NO2)2]Br·2H2O (II), and cis-β-[Co(trien)(NO2)2]·ClO3 (III) are reported. Compound (I) crystallized in space group Pbca, with a = 12.3323(9), b = 13.0265(9) and c = 18.1597(13) Å; compound (II) crystallized in space group Pca21, with a = 8.1844(7), b = 14.7011(14) and c = 12.4875(12) Å, while compound (III) also crystallized in space group Pca21, with a = 12.4897(8), b = 8.8499(6) and c = 12.6500(8) Å. In all three cases, the Co(III) ions were six-coordinated with nitrogens from trien and two nitrates. Inter- and intramolecular hydrogen bonding interactions are discussed to explain the conglomerate versus racemate crystallization behavior adopted by these three compounds, with comparison of their known analogue compounds of cis-α/β-[Co(trien)(NO2)2]X, where X = halide and NO− 3. For the cis-β-[Co(trien)(NO2)2]+ cation, the conformation of the cation itself determines the intramolecular hydrogen bonding pattern, and the interaction of counteranions can be ignored, while in cis-α-[Co(trien)(NO2)2]·ClO4, the perchlorate interrupts the intramolecular hydrogen bonding pattern observed in the halide analog.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009589814764
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  • 10
    Electronic Resource
    Electronic Resource
    The phenomenon of conglomerate crystallization. Part 40: The crystallization behavior oftrans- Co(III) amines (+)546-trans-[Co(3,2,3-tet)(NO2)2]Cl·3H2O (I), (−)589 -trans-[Co(3,2,3-tet)Cl2]NO3 (II), and of (+)546-trans-[Co(3,2,3-tet)(NO2)2]NO3 (III) (1995)
    Springer
    Structural chemistry 6 (1995), S. 99-113 
    Details
    ISSN: 1572-9001
    Keywords: Conglomerate crystallization ; trans-Co(III)amines ; homochiral cations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A racemic solution of (I) crystallizes as a conglomerate from which a crystal we selected was found to be (+)546-trans-[Co(3,2,3-tet)(NO2)2]Cl·3H2O (I), CoClO7N6C8H28. It crystallizes in the enantiomorphic space groupP2l2l2l, with lattice constantsa=18.501(15) å,b=14.433(2) å, andc=6.441(3) å;V=1720.07 å3 andd(calc. M.W.=414.73,Z=4)=1.601 g cm−3. A total of 2305 data were collected over the range of 4
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02281735
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