The title salt, [Zn(C 10 H 7 NOS) 2 (H 2 O) 2 ](BF 4 ) 2 , crystallizes isotypically with the Co II analog in the monoclinic space group P 2 1 / n . In the complex cation, the central Zn II atom (site symmetry 1 ) has a pseudo-octahedral coordination environment with bonding to pyridyl N [2.0624 (18) Å] and carbonyl O [2.1030 (13) Å] atoms from the 2-thienyl 2-pyridyl ketone ligands. The remaining bonds are to water molecules [2.1598 (16) Å], which form an O—H...F hydrogen-bonded layer with BF 4 − counter-ions.
The reaction of 2-methylpyrazine with copper(II) bromide via gel diffusion yielded crystals of the title compound, [CuBr 2 (C 5 H 6 N 2 ) 2 ] n . The compound crystallizes in the monoclinic P 2 1 / n space group and the metal atom (site symmetry 1 ) adopts a square-planar CuBr 2 N 2 coordination geometry. Short Cu...Br contacts, nearly perpendicular to the Cu coordination plane, link the molecules into chains propagating parallel to the a -axis direction, which are well separated by the bulk of the methylpyrazine ligands.
The complete molecule of the title compound, C 8 H 8 N 4 Se 2 , is generated by a crystallographic twofold axis: the almost planar 1,2,3-selenadiazole ring and its symmetry-generated partner are annulated to a cyclodeca-1,3-diene ring. Their dihedral angle amounts to 88.4 (2)° and the conformation of the hexamethylene chain is mostly staggered ( gauche ) except for a near- anti arrangement in the middle.
The title compound methyl 3-[(trimethylsilyl)ethynyl]benzoate, C 13 H 16 O 2 Si, was synthesized via a Sonogashira coupling reaction using cis -[PdCl 2 (PPh 3 ) 2 ] and CuI. The two molecules in the unit cell pack utilizing weak intermolecular hydrogen-bonding interactions between carbon H atoms and neighboring oxygen atoms in the methyl benzoate group.
The title compound, [RuCl 2 (C 18 H 26 BrP) 2 ]·1.6CH 3 OH, crystallizes in the monoclinic space group P 2 /n with two and a half molecules plus four molecules of methanol solvent in the asymmetric unit ( Z ′ = 5/2, Z = 10). Distortion of the octahedral coordination environment results in the slight variation of bond lengths and bond angles from ideal values. The crystal packing is reinforced by classical hydrogen bonding, O—H... X (where X = O or Cl) and non-classical hydrogen bonding interactions such as C—H...Cl.
