metal-organic compounds
Open access
The title compound, {(C6H8N)[AgWSe4]·C6H7N}n, consists of anionic [WAgSe4]n chains, 2-methylpyridinium cations and neutral 2-methylpyridine molecules. The Se atoms bridge the Ag and W atoms, forming a polymeric chain extending along the b-axis direction. Both the Ag and W atoms are located on a twofold rotation axis and each metal atom is coordinated by four Se atoms in distorted tetrahedral geometry. In the crystal, the 2-methylpyridinium cation and 2-methylpyridine molecule are linked via N—HN hydrogen bonding. Weak C—HSe interactions link the organic components and polymeric anions into a three-dimensional architecture.
organic compounds
Open access
The asymmetric unit of the title compound, C38H34Cl2O2Te2·H2O, contains two independent TeIV cations, each coordinated by three phenyl ligands, two Cl− anions and one acetic acid molecule in a distorted octahedral C3Cl2O geometry; the longer TeCl distances ranging from 3.2007 (11) to 3.4407 (11) Å and the longer TeO distances of 3.067 (3) and 3.113 (3) Å indicate the weak bridge coordination. The Cl− anion and acetic acid molecule bridge the two independent TeIV cations, forming the dimeric complex molecule, in which the TeTe separation is 3.7314 (4) Å. In the crystal, the water molecules of crystallization link the TeIV complex molecules into chains running along the b-axis direction via O—HO and O—HCl hydrogen bonds.