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...Polybis(2-benzyloxyacetato-3O,O:O)cadmium(II)- April 23, 2008 The title cadmium derivative of benzyloxyacetic acid, Cd(C9H9O3)2n, exists as a 2-carboxylate-bridged layer network. Two benzyloxyacetate units each chelate the metal through a carboxylate as well as through the ether O atoms; the metal is also coordinated by the double-bond carbonyl O atom of two adjacent benzyloxyacetate units in an octahedral geometry. The metal atom lies on a special position of 2 site symmetry. The phenyl group is disordered equally over two positions.http://scripts.iucr.org/cgi-bin/paper?sg2235 Bis(-2,2-oxydibenzoato-4O,O:O,O)bis(4,4-dimethyl-2,2-bipyridine-2N,N)zinc(II) dihydrate- April 23, 2008 In the title compound, Zn2(C14H8O5)2(C12H12N2)22H2O, the ZnII atom exhibits a distorted octahedral coordination geometry, defined by two N atoms from one 4,4-dimethyl-2,2-bipyridine ligand and four O atoms from two bridging 2,2-oxydibenzoate ligands. The molecule is a centrosymmetric dimer. Stacking interactions are observed between the 4,4-dimethyl-2,2-bipyridine ligands, with a centroidcentroid distance of 3.649(2).http://scripts.iucr.org/cgi-bin/paper?hy2127 catena-Polybis4-(1H-1,3,7,8-tetraazacyclopentalphenanthren-2-yl)phenol-2N7,N8lead(II)--4,4-oxydibenzoato-3O,O:O dihydrate- April 23, 2008 The carboxylate dianion in the title compound, Pb(C14H8O5)(C19H12N4O)22H2O, uses one carboxylate group to O,O-chelate a bis4-(1H-1,3,7,8-tetraazacyclopentalphenanthren-2-yl)phenol-chelated PbII atom and uses its other carboxylate group to bind to another PbII atom in an irregular monodentate manner. The PbII atom exists in an undefined seven-coordinate geometry in the chain structure; the lone pair is stereochemically active. Adjacent chains are linked by intermolecular OH...N, NH...O and...http://scripts.iucr.org/cgi-bin/paper?si2072 Bis4-(dimethylamino)pyridinium tetrabromidodiphenylstannate(IV)- April 23, 2008 The SnIV atom of the stannate anion in the title salt, (C7H11N2)2SnBr4(C6H5)2, lies on a center of inversion in a tetragonally compressed octahedron. The two independent Br atoms in the anion are hydrogen-bond acceptors for the same cation.http://scripts.iucr.org/cgi-bin/paper?tk2264 1,6,6-Trimethyl-1H-chromeno6,7-dthiazol-2(6H)-one- April 23, 2008 The title compound, C13H13NO2S, was prepared by a thermocyclization reaction from 3-methyl-6-(2-methylbut-3-yn-2-yloxy)benzodthiazol-2(3H)-one. In the crystal structure, the methylthiazole unit is planar, while the pyran ring assumes a screw-boat conformation. Intramolecular CH...O hydrogen bonding helps to stabilize the molecular structure.http://scripts.iucr.org/cgi-bin/paper?xu2407 Redetermination of the borax structure from laboratory X-ray data at 145 K- April 23, 2008 The title compound, sodium tetraborate decahydrate (mineral name: borax), Na2B4O5(OH)48H2O, has been studied previously using X-ray Morimoto (1956). Miner. J. 2, 118 and neutron Levy & Lisensky (1978). Acta Cryst. B34, 35023510 diffraction data. The structure contains tetraborate anions B4O5(OH)42 with twofold rotation symmetry, which form hydrogen-bonded chains, and Na(H2O)6 octahedra that form zigzag chains Na(H2O)42(H2O)21. The OH bond distances obtained from the present redetermination..http://scripts.iucr.org/cgi-bin/paper?wm2174 Poly4-naphthalene-1,4-dicarboxylato-4O:O:O:O-2-naphthalene-1,4-dicarboxylato-4O,O:O,O-bis(2-phenyl-1H-1,3,7,8-tetraazacyclopentalphenanthrene-2N7,N8)d- April 23, 2008 One of the two 1,4-dicarboxylate dianions in the title compound, Mn2(C12H6O4)2(C19H12N4)2C3H7NO, uses its two carboxylate groups to chelate two N-heterocycle-chelated Mn atoms; the other 1,4-dicarboxylate dianion binds to four such metal centers. The octahedrally coordinated Mn atoms are linked through the two dianions into a layer motif; the dimethylformamide molecules occupy the spaces between adjacent layers. Ten C atoms and attached H atoms of one dianion are disordered equally over two...http://scripts.iucr.org/cgi-bin/paper?rz2195 Di--chlorido-bis(9-(2,6-diisopropylphenyl)iminomethylanthracen-1-ylpalladium(II))- April 23, 2008 The centrosymmetric title compound, Pd2Cl2(C27H26N)2, was obtained by a CH bond-activation reaction of a Schiff base ligand with Li2PdCl4 in methanol, and was crystallized from dichloromethane as orange crystals. The Pd atom displays a slightly distorted square-planar geometry, with the N- and C-atom donors in a cis arrangement.http://scripts.iucr.org/cgi-bin/paper?cs2073 Bis1,3-bis(diphenylphosphino)propane-2P:Psilver(I) bis(chlorodifluoroacetato-O)triphenylstannate(IV)- April 23, 2008 In the title salt, Ag(C27H26P2)2Sn(C6H5)3(C2ClF2O2), the AgI atom exists in a tetrahedral coordination geometry formed by four P atoms AgP = 2.460(1)2.501(1), whereas the SnIV atom exists in a trans-trigonalbipyramidal coordination geometry formed by two O SnO = 2.208(3) and 2.233(3) and three C atoms SnC = 2.115(4)2.128(4);( CSnC)= 360.0(6).http://scripts.iucr.org/cgi-bin/paper?cv2399 Diaquabis(benzyloxyacetato)copper(II)- April 23, 2008 In the title mononuclear complex, Cu(C9H9O3)2(H2O)2, the CuII ion, located on an inversion center, is hexacoordinated by four O atoms from two benzyloxyacetate ligands CuO = 1.9420(14) and 2.2922(14) and two water molecules CuO = 2.0157(15) in a distorted octahedral geometry. In the crystal structure, intermolecular OH...O hydrogen bonds link the molecules into layers parallel to the bc plane.http://scripts.iucr.org/cgi-bin/paper?cv2398 |