66 research outputs found
Poly[(μ2-nitrato-κ2 O:O′)(μ2-pyrimidinium-2-carboxylato-κ2 O:O′)lithium(I)]
In the structure of the title compound, [Li(C5H4N2O2)(NO3)]n, the LiI ion is coordinated by two carboxylate O atoms donated by two ligands and two nitrate O atoms in a distorted tetrahedral geometry. LiI ions, bridged by carboxylate O atoms, form molecular ribbons composed of dimeric units. Two nitrate O atoms link the ribbons into molecular layers parallel to (001). Hydrogen bonds are active between protonated heterocyclic N atoms as donors and carboxylate O atoms as acceptors. The layers are held together by van der Waals interactions
(Nitrato-κ2 O,O′)bis(tryptanthrin-κN)silver(I)
In the crystal structure of the title compound, [Ag(NO3)(C15H8N2O2)2], tryptanthrin (indolo[2,1-b]quinazoline-6,12-dione) and silver nitrate form a 2:1 complex. The silver ion is surrounded by two tryptanthrin ligands, each coordinating through the N atoms, with Ag—N bond lengths of 2.247 (3) and 2.264 (3) Å, and an anionic nitrate ligand coordinating through two O atoms, with Ag—O bond lengths of 2.499 (3) and 2.591 (3) Å. The N—Ag—N plane and the O—Ag—O plane are roughly perpendicular, making a dihedral angle of 81.6 (2)°. In the crystal, C—H⋯O interactions between aromatic H atoms and keto and nitrate O atoms as well as π–π interactions [centroid-centroid distance = 3.706 (4) Å] give rise to a three-dimensional network
Poly[hemi(ethylenediammonium) [di-μ-oxalato-indium(III)] dihydrate]
In title compound, {(C2H10N2)0.5[In(C2O4)2]·2H2O}n, the unique InIII ion is coordinated by eight O atoms from four oxalate ligands in a distorted square-antiprismatic environment. The doubly bis-chelating oxalate ligands act as bridging ligands connecting symmetry-related InIII ions and forming a three-dimensional open framework structure. Ethylenediammonium cations and water molecules occupy the voids within the structure. The unique ethylenediammonium cation and one water molecule both lie on a twofold rotation axis. One of the other two water molecules residing on general crystallographic sites was refined as disordered with half occupancy. In the crystal structure, cations and water molecules are linked to the anionic framework via intermolecular O—H⋯O and N—H⋯O hydrogen bonds
ChemInform Abstract: Specific Features of the Structure of Coordination Polymers of Silver with Ditopic Nitrogen-Containing Ligands
ChemInform Abstract: Stereochemistry of Mixed Fluorine-Containing I(V), Te(IV), and Sn(II) Compounds with a Lone Electron Pair
ChemInform Abstract: Stereochemistry of Iodine(V) and Tellurium(IV) Fluoride Compounds with an Unshared Electron Pair
ChemInform Abstract: Synthesis and Study of Decafluorohexatin(II) Hexafluorotitanate, ( Sn6F10)(TiF6).
Ribbon structure of the coordination polymer of silver trifluoroacetate with 2-pyrimidinecarboxamide
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