Special Issue "Feature Paper"

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A special issue of Crystals (ISSN 2073-4352).

Deadline for manuscript submissions: closed (30 September 2011)

Special Issue Editor

Guest Editor
Prof. Dr. Gerd Meyer (Website)

Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany
Phone: 1-515-357-1500
Fax: +49 221 470 5083
Interests: rare-earth and transition metal; solid state; coordination chemistry

Published Papers (5 papers)

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Research

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Open AccessArticle Structures of Benzenesulfonylamino-3-(4-benzenesulfonyloxy-phenyl)-propionic acid and 2-(toluene-4-sulfonylamino)-3-[4-(toluene-4-sulponyl-oxy)-phenyl]-propionic acid: Variations in L-tyrosine Backbone Conformation, Intramolecular Aromatic π–π Stacking and Short C–H···O Interactions
Crystals 2011, 1(2), 69-77; doi:10.3390/cryst1020069
Received: 26 April 2011 / Revised: 8 June 2011 / Accepted: 10 June 2011 / Published: 14 June 2011
Cited by 2 | PDF Full-text (321 KB) | HTML Full-text | XML Full-text
Abstract
The syntheses and crystal structures of benzenesulfonylamino-3-(4-benzenesulfonyloxy-phenyl)-propionic acid (1) and 2-(toluene-4-sulfonylamino)-3-[4-(toluene-4-sulponyloxy)-phenyl]-propionic acid (2) are described. The L-tyrosine cores of the molecules show significant conformational differences. In 1, both organic molecules show intramolecular aromatic π–π stacking and in [...] Read more.
The syntheses and crystal structures of benzenesulfonylamino-3-(4-benzenesulfonyloxy-phenyl)-propionic acid (1) and 2-(toluene-4-sulfonylamino)-3-[4-(toluene-4-sulponyloxy)-phenyl]-propionic acid (2) are described. The L-tyrosine cores of the molecules show significant conformational differences. In 1, both organic molecules show intramolecular aromatic π–π stacking and in 2 a very short intermolecular Cα–H···O interaction is seen. The structures of 1 and 2 are compared with those of related materials. Crystal data: 12·H2O·MeOH [2(C21H19NO7S2)·H2O·CH4O], Mr = 973.04, monoclinic, P21 (No. 4), a = 8.0078 (4) Å, b = 34.0704 (16) Å, c = 8.5506 (3) Å, β = 94.239 (3)°, V = 2326.47 (18) Å3, Z = 2, T = 296 K, R(F) = 0.062, wR(F2) = 0.157, 2·H2O (C23H25NO7S2·H2O), Mr = 507.56, monoclinic, P21 (No. 4), a = 5.7171 (7) Å, b = 24.359 (3) Å, c = 9.1043 (10) Å, β = 104.563 (6)°, V = 1227.2 (2) Å3, Z = 2, T = 296 K, R(F) = 0.055, wR(F2) = 0.092. Full article
(This article belongs to the Special Issue Feature Paper)
Open AccessArticle Short Intramolecular N–H⋯C(carbonyl) Interactions in Mixed-Ligand Molybdenum Hexacarbonyl Derivatives
Crystals 2011, 1(2), 47-58; doi:10.3390/cryst1020047
Received: 10 May 2011 / Revised: 25 May 2011 / Accepted: 8 June 2011 / Published: 8 June 2011
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Abstract
The syntheses and single-crystal structures of Mo(CO)3(phen)(dipy) (1), Mo(CO)3(biquin)(dipy) (2) and Mo(CO)3(dpme)(dipy) (3), (phen = 1,10-phenanthroline, C12H8N2; dipy = 2,2'-dipyridylamine, C10H9 [...] Read more.
The syntheses and single-crystal structures of Mo(CO)3(phen)(dipy) (1), Mo(CO)3(biquin)(dipy) (2) and Mo(CO)3(dpme)(dipy) (3), (phen = 1,10-phenanthroline, C12H8N2; dipy = 2,2'-dipyridylamine, C10H9N3; biquin = 2,2'-biquinoline, C18H12N2; dpme = 2,2'-dipyridylmethane, C11H10N2) are described. In each case, distorted fac-MoC3N3 octahedral coordination geometries arise for the metal atoms. Short intramolecular N–H…C interactions from the dipy N–H group to a carbonyl carbon atom occur in each structure. Crystal data: 1 (C25H17MoN5O3), Mr = 531.38, monoclinic, P21/n (No. 14), Z = 4, a = 11.0965 (5) Å, b = 13.0586 (6) Å, c = 16.6138 (8) Å, b = 108.324 (1)°, V = 2285.31 (18) Å3, R(F) = 0.035, wR(F2) = 0.070. 2 (C31H21MoN5O3), Mr = 607.47, monoclinic, P21/n (No. 14), Z = 4, a = 11.4788 (6) Å, b = 19.073 (1) Å, c = 11.9881 (6) Å, b = 95.179 (1)°, V = 2613.9 (2) Å3, R(F) = 0.030, wR(F2) = 0.076. 3 (C24H19MoN5O3), Mr = 521.38, monoclinic, P21/n (No. 14), Z = 4, a = 8.4222 (3) Å, b = 21.5966 (9) Å, c = 12.5011 (5) Å, b = 94.065 (1)°, V = 2268.12 (15) Å3, R(F) = 0.025, wR(F2) = 0.065. Full article
(This article belongs to the Special Issue Feature Paper)
Open AccessArticle Barium Oxalates Combined with Oxo-Anions and Organic Cations: Syntheses and Structures of Ba2(C2O4)(H2PO3)2 and C2H10N2·Ba(H2O)2(HC2O4)4
Crystals 2011, 1(2), 59-68; doi:10.3390/cryst1020059
Received: 25 May 2011 / Revised: 1 June 2011 / Accepted: 7 June 2011 / Published: 8 June 2011
Cited by 3 | PDF Full-text (851 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The syntheses and single-crystal structures of Ba2(C2O4)(H2PO3)2 (1) and C2H10N2·Ba(H2O)2(HC2O4)4 (2) are [...] Read more.
The syntheses and single-crystal structures of Ba2(C2O4)(H2PO3)2 (1) and C2H10N2·Ba(H2O)2(HC2O4)4 (2) are described. Compound 1 is a three-dimensional mixed-anion framework containing BaO9 coordination polyhedra, which approximate to monocapped square anti-prisms: the connectivity of the BaO9 units via edges and triangular faces leads to a sheet structure. The oxalate ion in 1 is substantially twisted about its C–C bond [dihedral angle between the CO2 groups = 33.8 (3)°]. Compound 2 is a molecular salt containing ethylenediammonium dications and [Ba(HC2O4)4(H2O)2]2– dianions, which are linked by O–HLO and N–HLO hydrogen bonds. The BaO10 coordination polyhedron can be described as a distorted pentagonal anti-prism. Crystal data: 1 (C2H4Ba2O10P2), Mr = 524.68, monoclinic, C2/c (No. 15), Z = 4, a = 12.3829 (3) Å, b = 7.9124 (2) Å, c = 11.0858 (3) Å, b = 114.788 (2)°, V = 986.10 (4) Å3, R(F) = 0.016, wR(F2) = 0.040. 2 (C10H18BaN2O10), Mr = 591.60, monoclinic, C2/m (No. 12), Z = 2, a = 12.7393 (7) Å, b = 13.0111 (7) Å, c = 5.6050 (3) Å, b = 104.208 (4)°, V = 900.62 (8) Å3, R(F) = 0.027, wR(F2) = 0.054. Full article
(This article belongs to the Special Issue Feature Paper)
Open AccessCommunication Synthesis and Crystal Structure of 9-(4,6-dichloro-1,3,5-triazin-2-yl)-9H-carbazole
Crystals 2011, 1(2), 28-33; doi:10.3390/cryst1020028
Received: 31 March 2011 / Revised: 19 April 2011 / Accepted: 22 April 2011 / Published: 26 April 2011
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Abstract
A carbazole-triazine hybrid was prepared by addition-elimination between carbazole and 2,4,6-trichlorotriazine in the presence of base. The compound shows intensely blue fluorescence both in solution and solid state when irradiated with UV-radiation. The structure of (3) was supported by the [...] Read more.
A carbazole-triazine hybrid was prepared by addition-elimination between carbazole and 2,4,6-trichlorotriazine in the presence of base. The compound shows intensely blue fluorescence both in solution and solid state when irradiated with UV-radiation. The structure of (3) was supported by the spectroscopic data and unambiguously confirmed by the single crystal X-ray diffraction data. It was crystallized in the monoclinic space group C2/c with unit cell dimensions a = 20.280(3), b = 8.0726(14), c = 16.005(3) Å, α = γ = 90°, β = 98.947(3)°, V = 2588.3(8) ų, Z = 8. Full article
(This article belongs to the Special Issue Feature Paper)

Other

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Open AccessShort Note Crystal Structure of Na3MoCl6
Crystals 2011, 1(3), 99-103; doi:10.3390/cryst1030099
Received: 10 May 2011 / Revised: 25 May 2011 / Accepted: 23 June 2011 / Published: 4 July 2011
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Abstract
The ternary chloride Na3MoCl6 is obtained as red crystals from a disproportionation reaction of molybdenum dichloride, {Mo6}Cl12, in an acidic NaCl/AlCl3 melt at 350 °C. The crystal structure (trigonal, P-31c, a = 687.1(1), [...] Read more.
The ternary chloride Na3MoCl6 is obtained as red crystals from a disproportionation reaction of molybdenum dichloride, {Mo6}Cl12, in an acidic NaCl/AlCl3 melt at 350 °C. The crystal structure (trigonal, P-31c, a = 687.1(1), c = 1225.3(2) pm, Z = 2, V = 501,0(1) 106 pm3) is that of Na3CrCl6: within a hexagonal closest-packing of chloride ions two thirds of the octahedral voids are filled between the AB double layers with Na+/Mo3+, and between the BA layers with Na+. Full article
(This article belongs to the Special Issue Feature Paper)

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