Acetylene-ammonia-18-crown-6 (1/2/1)

The title compound, C2H2·C12H24O6·2NH3, was formed by co-crystallization of 18-crown-6 and acetylene in liquid ammonia. The 18-crown-6 molecule has threefold rotoinversion symmetry. The acteylene molecule lies on the threefold axis and the whole molecule is generated by an inversion center. The two ammonia molecules are also located on the threefold axis and are related by inversion symmetry. In the crystal, the ammonia molecules are located below and above the crown ether plane and are connected by intermolecular N-H...O hydrogen bonds. The acetylene molecules are additionally linked by weak C-H...N interactions into chains that propagate in the direction of the crystallographic c axis. The 18-crown-6 molecule [occupancy ratio 0.830 (4):0.170 (4)] is disordered and was refined using a split model

Tricarbonylchlorido(6’,7’-dihydro-5’H-spiro[cyclohexane-1,6’-dipyrido[3,2-d :2’,3’-f][1,3]diazepine]-κ2N1,N11)rhenium(I)

In the title compound, [ReCl(C16H18N4)(CO)3], the ReI ion is coordinated in a distorted octahedral geometry by one Cl atom, two N atoms of the bidentate ligand and three carbonyl groups. The cyclohexane group is orientated in a transoid fashion with respect to the chloride ligand. In the crystal, N-H...Cl hydrogen bonds link complex molecules, forming a two-dimensional network parallel to (100)

Tricarbonylchlorido(6'7'-dihydro-5’H-spiro[cyclopentane-1,6'-dipyrido-[3,2-d:2',3'-f][1,3]diazepine]-κ2N1,N11)-rhenium(I)

In the title compound, [ReCl(C15H16N4)(CO)3], the ReI ion is coordinated in a distorted octahedral geometry by one Cl atom, two N atoms of the bidentate ligand and three carbonyl groups. The cyclopentane group is orientated in a transoid fashion with respect to the chloride ligand. The dihedral angle between the pryridine rings is 10.91 (12)°. In the crystal, N-H...Cl hydrogen bonds link complex molecules, forming a two-dimensional network parallel to (001)

N-Hydroxy-N-methyl­ammonium chloride

In the crystal structure of the title compound, CH6NO+·Cl−, the cations and anions are linked by N–H⋯Cl and O–H⋯Cl hydrogen bonds into an undulating layer motif [Schläfli symbol: 4(8).6(8).8(2)]. All non-H atoms lie on a mirror plane

Crystal structure of [butane-2,3-dione bis(4-methylthiosemicarbazonato](pyridine)zinc(II)

In the structure of the title complex, [Zn(C8H14N6S2)(C5H5N)], the ZnII ion has a pseudo-square-pyramidal coordination environment and is displaced by 0.490 Å from the plane of best fit defined by the bis­(thio­semicarbazonate) N2S2 donor atoms. Chains sustained by intermolecular N-H...N and N-H...S hydrogen-bonding interactions extend parallel to [10-1]

Poly[tetra­kis[μ2-1,3-bis­(4-pyrid­yl)propane-κ2 N:N′]dichloridobis(phenyl­acetato)dimanganese(II)]

In the title compound, [Mn2(C8H7O2)2Cl2(C13H14N2)4]n, the two MnII atoms lie on inversion centers and are connected by the N-heterocyclic ligands into a wave-like lamellar framework structure. One MnII atom is covalently bonded to two Cl atoms and the other to two benzyl­acetate anions; both Mn atoms show distorted octahedral coordinations

Heptane-1,7-diaminium dinitrate

In the title molecular salt, C7H20N2 2+·2NO3 −, the crystal structure exhibits an unusual back-to-back paired double-stacked packing arrangement culminating in an overall double zigzag pattern of the dications. The nitrate anions form a ring around one pair of double-stacked dications. An intricate three-dimensional N—H⋯O and N—H⋯(O,O) hydrogen-bonding network exists in the crystal structure

Bonvalotidine A acetone solvate from Delphinium bonvalotii Franch

The title compound (systematic name: 5,6β-dihy­droxy-1α,14α,16β-trimeth­oxy-4-methyl-7β,8-methyl­enedi­oxy-20-ethyl­aconitan-6-yl acetate acetone monosolvate), C27H41NO8·C3H6O, was isolated from Delphinium bonvalotii Franch, and is a typical C19-diterpenoid alkaloid. The mol­ecule has a lycoctonine carbon skeleton with four six-membered rings and three five-membered rings. Three six-membered rings adopt the chair conformations while the fourth adopts a boat conformation, while the five-membered rings have the envelope conformations. The solvent mol­ecule links with the organic mol­ecule via a classical O—H⋯O hydrogen bond. Weak C—H⋯O hydrogen bonding is present in the structure. An intra­molecular O—H⋯O hydrogen bond also occurs

2-[4-(Diethyl­amino)­benzyl­idene]malono­nitrile

In the title compound, C14H15N3, the diethyl­amino N atom, benzene ring, olefinic bond and cyano groups form an extended conjugated system, making the mol­ecule nearly planar: the dihedral angle between the benzene ring and the best plane throught the cyano groups is 4.93 (10)°, while the dihedral angle between the benzene ring and the plane through the diethyl­amino N atom and the two attached ethyl C atoms is 9.51 (14)°. In the crystal, inter­molecular C—H⋯π inter­actions stabilize the packing

Decane-1,10-diaminium dinitrate

The crystal structure of the title compound, C10H26N2 2+·2NO3 −, exhibits a back-to-back paired double-stacked packing arrangement culminating in an overall double zigzag pattern of the dications. Each pair of double-stacked dications is surrounded by a ring of ten nitrate anions. An intricate three-dimensional N---H...O and N---H...(O,O) hydrogen-bonding network exists in the crystal structure