Acta Crystallographica Section EStructure Reports Online was launched in January 2001 as the IUCr's first electronic-only journal. It is a rapid communication journal for the publication of concise reports on inorganic, metal-organic and organic structures, and benefits from an enhanced electronic publication procedure. Each published report includes a set of key indicators, giving a summary of the main descriptors of the precision and completeness of the study, with indications of problems such as disorder. The publication...Bis(2-aminopyrimidine-N1)dibromidozinc(II)- April 30, 2008 The title compound, ZnBr2(C4H5N3)2, is a mononuclear complex in which the ZnII ions have distorted tetrahedral coordination geometry. The ZnII ion binds to two N atoms from two different 2-aminopyrimidine ligands and two bromide ions. NH...N hydrogen bonds link the molecules to form a one-dimensional supramolecular structure. The supramolecular chains are parallel to each other and NH...Br hydrogen bonds link them into a two-dimensional network in the ac plane. Additionally, there are strong ...http://scripts.iucr.org/cgi-bin/paper?rn2036 3-Hydroxy-7,8-dimethoxyquinolin-2(1H)-one- April 30, 2008 In the crystal structure of the title compound, C11H11NO4, intramolecular OH...O hydrogen bonding results in the formation of a planar five-membered ring, which is nearly coplanar with the quinoline group. Intermolecular NH...O hydrogen bonds link the molecules into centrosymmetric dimers.http://scripts.iucr.org/cgi-bin/paper?hk2455 1,2-Bis5-(4-cyanophenyl)-2-methyl-3-thienyl-3,3,4,4,5,5-hexafluorocyclopent-1-ene: a photochromic diarylethene compound- April 30, 2008 The molecules of the title compound, C29H16F6N2S2, a photochromic dithienylethene with 4-cyanophenyl substituents, adopt an antiparallel arrangement that is reponsible for photoactivity. The molecule lies on a twofold rotation axis. The dihedral angle between the nearly planar cyclopentenyl and heteroaryl rings is 142.5(3), and that between the heteroaryl and benzene rings is 22.4(3). The distance between the heteroaryl rings of adjacent molecules is 3.601(2), indicating a interaction.http://scripts.iucr.org/cgi-bin/paper?ng2448 (E)-1-(4-Fluorophenyl)-3-(4-methylphenyl)prop-2-en-1-one- April 30, 2008 The title compound, C16H13FO, adopts an E configuration with respect to the C=C bond of the propenone unit. The dihedral angle between the two benzene rings is 47.0(5). Intramolecular CH...O hydrogen bonds generate an S(5) ring motif. In the crystal structure, molecules are packed into columns along the c axis and the structure is stabilized by weak intramolecular CH...O hydrogen bonds and intermolecular CH... interactions involving both aromatic rings.http://scripts.iucr.org/cgi-bin/paper?sj2485 1,2-BisN-(2,2-dimethylpropionyl)thioureidocyclohexane- April 30, 2008 In the title compound, C18H32N4O2S2, the dihedral angle between the two thiourea groups is 78.55(7). The molecular conformation is stabilized by intramolecular NH...O hydrogen bonds and the crystal structure is stabilized by intermolecular NH...O and CH...O hydrogen bonds, forming centrosymmetric dimers.http://scripts.iucr.org/cgi-bin/paper?bt2701 1-(2,4-Dichlorophenyl)-3-(4-methylphenyl)prop-2-en-1-one- April 30, 2008 The molecule of the title compound, C16H12Cl2O, adopts an E configuration. The dihedral angle between the two benzene rings is 42.09(5). In the crystal structure, molecules are linked into a three-dimensional framework by weak CH...O interactions and by CH... interactions involving the methylphenyl ring.http://scripts.iucr.org/cgi-bin/paper?ci2584 Chlorido(ethyldiphenylphosphine-P)(1-pyrrolidinecarbodithioato-2S,S)nickel(II)- April 30, 2008 In the crystal structure of the title complex, Ni(C5H8NS2)Cl(C14H15P), the Ni atom is coordinated by an S,S-chelating dithiocarbamate, a chloride and a diphenylethylphosphine ligand in a distorted square-planar arrangement.http://scripts.iucr.org/cgi-bin/paper?at2563 (2,2-Bipyridine-2N,N)N-(2-oxido-1-naphthylidene)threoninato-3O1,N,O2copper(II)- April 30, 2008 In the title complex, Cu(C15H13NO4)(C10H8N2), the Schiff base ligand is derived from the condensation of 2-hydroxy-1-naphthaldehyde and l-threonine. The CuII atom is five-coordinated by one N atom and two O atoms from the Schiff base ligand and by two N atoms from a 2,2-bipyridine ligand in a distorted square-pyramidal geometry. In the crystal structure, the combination of intermolecular OH...O and CH...O hydrogen bonds leads to a two-dimensional network.http://scripts.iucr.org/cgi-bin/paper?hy2129 (2,9-Dimethyl-1,10-phenanthroline-2N,N)bis(2-hydroxybenzoato)-O;2O,O-cobalt(II)- April 30, 2008 In the title compound, Co(C7H5O3)2(C14H12N2), the CoII ion is five-coordinated by two N atoms from one 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand and three O atoms from two 2-hydroxybenzoate anions in a distorted trigonal bipyramidal geometry. The carboxylate group of one of the two 2-hydroxybenzoate anions is monodentate with a normal CoO distance 1.9804(18), while the other is bidentate with two longer CoO bonds 2.1981(18) and 2.1359(19). The crystal structure is stabilized by aromatic .http://scripts.iucr.org/cgi-bin/paper?lx2038 Butane-1,4-diammonium bis(pyridine-2,6-dicarboxylato)cuprate(II) trihydrate- April 30, 2008 In the title compound, (C4H14N2)Cu(C7H3NO4)23H2O or (bdaH2)Cu(pydc)23H2O (where bda is butane-1,4-diamine and pydcH2 is pyridine-2,6-dicarboxylic acid), the CuII atom is coordinated by four O atoms CuO = 2.0557(16)2.3194(16) and two N atoms CuN = 1.9185(18) and 1.9638(18) from two chelating rings of the pydc2 anions, which act as tridentate ligands. The geometry of the resulting CuN2O4 coordination can be described as distorted octahedral. The the two pydc2 fragments are almost perpendicular to.http://scripts.iucr.org/cgi-bin/paper?su2053 |