Planarity of the XC(=)NHY linkage has been investigated in unprecedented detail in a number of relatively simple compounds, including formamide (X = Y = H), acetamide (X = CH3, Y = H), urea (X = NH2, Y = H), carbamic acid (X = OH, Y = H), and methyl carbamate (X = OCH3, Y = H). Reliable estimates of the equilibrium structures of formamide, cyanamide, acetamide, urea, carbamic acid, methylamine,...

The title compound, C(2)H(8)N(+)·C(22)H(12)BO(6) (-)·0.5H(2)O, was synthesized under atmospheric conditions in the presence of dimethyl-formamide acting as a template. The structure is composed of [NH(2)(CH(3))(2)](+) cations, bis-(3-oxidonaphthalene-2-carboxyl-ato)borate anions and water mol-ecules. The water molecule lies on a twofold rotation axis. The stabilization of the crystal structure ...

In the title binuclear centrosymmetric complex, [Cu(2)I(2)(C(8)H(6)N(4))(C(18)H(15)P)(2)]·2C(3)H(7)NO, the bis-bidentate 2,2'-bipyrimidine ligand bridges two copper(I) ions, each additionally bound to an iodide anion and a triphenyl-phosphane ligand in a distorted tetra-hedral N(2)IP geometry. The complex mol-ecules pack in columns parallel to [100] generating cavities occupied by dimethyl-form...

We investigated the influence of the reduction state of gold ions on the growth of gold nanocrystals in N,N-dimethyl formamide (DMF). While freshly prepared solutions of AuCl3 produce spherical nanocrystals, aged precursor solutions containing mainly Au+ ions and Au(0) atoms lead to various branched nanoparticles. Furthermore, we show that also the amount of the reducing and stabilisation agent...

In the title compound, [Mn(C(5)H(6)N(3)O)(2)(C(3)H(7)NO)]ClO(4), the Mn(III) atom lies on the inversion centre of the centrosymmetric complex cation and has a distorted octa-hedral coordination geometry, formed by two N atoms and two O atoms from two 1-methyl-imidazole-2-carbaldehyde oximate ligands and two O atoms from two dimethyl-formamide ligands. Perchlorate acts as a counterion to balance...

The title centrosymmetric dinuclear Ni(II) complex, [Ni(C(14)H(8)O(4)S)(C(3)H(7)NO)](n), was prepared via reaction of Ni(NO(3))(2)·6H(2)O and thio-salicylic acid, with H(2)O and dimethyl-formamide (DMF) as the mixed solvent. The central Ni(II) ion is five-coordinated by five O atoms from DMF and from the carboxyl-ate groups of the organic ligand. The symmetry-related coordination polyhedra inte...

The title compound, C(18)H(23)N(2)Si(+)·Cl(-)·H(2)O, was synthesized from 1-[(trimethyl-sil-yl)meth-yl]benzimidazole and benzyl chloride in dimethyl-formamide. The benzimidazole ring system is approximately planar, with a maximum deviation of 0.022 (2) Å, and makes an angle of 74.80 (12)° with the phenyl ring. The crystal packing is stabilized by O-H⋯Cl, C-H⋯Cl, C-H⋯O and C-H⋯π inter-actions be...

The Schiff base mol-ecule of the title compound, C(15)H(14)N(2)O(4)·C(3)H(7)NO, adopts a trans configuration with respect to the C=N double bond; the Schiff base itself is nearly planar (r.m.s. deviation 0.20 Å). The amido N atom is a hydrogen-bond donor to the dimethyl-formamide solvate mol-ecule. One of the hydr-oxy groups forms an intra-molecular hydrogen bond to the N atom of the C=N double...

The aromatic mol-ecule of the title compound, C(20)H(14)N(4)·2C(3)H(7)NO, occupies a special position on an inversion center. The benzimidazole unit (planar to within 0.008 Å) forms a dihedral angle of 9.1 (2)° with the central benzene ring. The benzimidazole H atom participates in a hydrogen bond with the dimethyl-formamide solvent molecule, thus giving rise to the title 1:2 aggregate. These a...

A series of vanadium-substituted Dawson-structure POM-type ionic liquids, [TEAPS]7P2W17VO62 and [TEAPS]9P2W15V3O62, bearing sulfo-group grafted ammonium (TEAPS) cations and Dawson-type polyoxoanions have been formed which are reversible-thermal-response type gels. These gel-type compounds exhibit a phase transition from a quasi-solid gel phase to an isotropic sol phase. What's more, this series...