In the title compound, C 8 H 10 N 2 OSe, an almost planar 1,2,3-selenadiazole ring is annulated to a cyclooctenone ring with a twist-boat conformation. The heterocycle and C—C(=O)—C carbonyl moieties subtend a dihedral angle of 54.25 (11)°. In the extended structure, weak C—H...O and C—H...N interactions link the molecules into double layers lying parallel to the bc plane.
The title compound, C 17 H 18 C l2 N 4 S 2 , crystallizes in the monoclinic space group I 2/ a with one molecule in the asymmetric unit. In the molecule, two 1-(4-chlorophenyl)thiourea entities are bridged by a propyl fragment. The thiourea entities are inclined relative to the propyl group in different ways, as shown by the C—C—C—N torsion angles of −71.23 (13) and −179.50 (10)°. In the crystal, N—H...S hydrogen bonds lead to the formation of supramolecular layers parallel to (001).
In the title compound, C 8 H 10 N 2 OSe, an almost planar 1,2,3-selenadiazole ring is annulated to a cyclooctenone ring with a twist-boat conformation. The heterocycle and C—C(=O)—C carbonyl moieties subtend a dihedral angle of 54.25 (11)°. In the extended structure, weak C—H...O and C—H...N interactions link the molecules into double layers lying parallel to the bc plane.
The title complex, [Ru(C7H4N2)2(C10H14)(C3H9P)] or (p-cym)Ru(C2-2py)2(PMe3), where p-cym = η6-1-isopropyl-4-methylbenzene and C2-2py = η1-C-pyridin-2-ylethynide, comprises a pseudo-octahedral RuII atom with p-cym occupying one face of the octahedron and the other face comprised of monodentate PMe3 and two η1-C2-2py ligands. The Ru—Cethynide bond lengths are 2.0248 (16) and 2.0343 (17) Å. The N—C—C—N torsion angle of 151.1 (2)° suggests a near anti-conformation for the two pyridine rings. In the crystal, hydrogen bonding involving one C—H donor and one nitrogen acceptor from each pyridine ring generates dimers propagating along the a-axis direction via supporting C—H...π interactions.
The complete molecule of the title compound, C8H8N4Se2, 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.
