In the mol-ecule of the title compound, C(13)H(10)ClN(3)OS, the dihedral angles between the plane through the thio-urea group and the pyridine and benzene rings are 53.08 (3) and 87.12 (3)°, respectively. The mol-ecules are linked by inter-molecular N-H⋯N hydrogen-bonding inter-actions to form a supra-molecular chain structure along the a axis. An intra-mol-ecular N-H⋯O hydrogen bond is also pr...

The interaction of [BH(x)]- and [NH(x)]-containing species gives rise to molecular hydrogen and the establishment of the B-N bond. Up to now, metal amides and ammonia are the commonly used [NH(x)] sources. Herein, urea, an organic carbonyl diamide, was used to react with Ca(BH4)2. A new type of complex hydride Ca(BH4)2·4CO(NH2)2 was synthesized with release of ca. 5.2 wt% hydrogen below 250 °C.

In the title compound, C(22)H(19)ClN(2)OS, the thiono and carbonyl groups are trans positioned with respect to a partially double C-N bond. The amide group is twisted relative to the thio-urea fragment, forming a dihedral angle of 46.75 (11)°. In the crystal, inter-molecular N-H⋯S and C-H⋯O hydrogen bonds link the mol-ecules into a one-dimensional polymeric structure parallel to the c axis.

Convergent preparative routes to new urea-pyrazolate dinucleating ligands are described. Metal complexes of these ligands have hydrogen bond donors that are proximal to the metal centers that interact with other coordinated species. This is exemplified by Co(II) dimers with Co(II)-mu-Cl-Co(II) motifs, in which the chloro ligand is involved in four intramolecular hydrogen bonds. These noncovalen...

In the title compound, C12H9ClN4OS, the carbonyl group is at a cis position with respect to the thio-urea unit. The dihedral angle between the phenyl and pyrimidine ring is 16.49 (6)°. An intra-molecular N-H⋯N hydrogen bond stabilizes the mol-ec-ular conformation. In the crystal, N-H⋯N, C-H⋯O and C-H⋯S hydrogen bonds generate chains along the bc axis.

The title compound, C(10)H(11)F(3)N(2)O, is an important urea-based herbicide. In the crystal structure, the mol-ecular packing is stabilized by two intra-molecular C-H⋯O hydrogen bonds and one inter-molecular N-H⋯O hydrogen bond, generating a C(4) graph-set motif running parallel to the [001] direction. The F atoms are disordered over two sites, with occupancies of 0.176 (9) and 0.824 (9).

The title mol-ecule, C(16)H(15)ClN(2)OS, exists in the solid state in its thione form with typical thio-urea C-S and C-O bonds lengths, as well as shortened C-N bonds. An intra-molecular N-H⋯O hydrogen bond stabilizes the mol-ecular conformation and inter-molecular N-H⋯S hydrogen bonds link the mol-ecules into centrosymmetric dimers. The dihedral angle between the aromatic rings is 50.18 (5)°.

In the title compound, C(17)H(17)ClN(2)O(3)S, the central carbonyl-thio-urea unit is nearly planar [maximum atomic deviation = 0.019 (3) Å] and makes dihedral angles of 2.47 (7) and 17.76 (6)° with the terminal benzene rings. An intra-molecular N-H⋯O hydrogen bond occurs. Weak inter-molecular C-H⋯S and C-H⋯Cl hydrogen bonding is observed in the crystal structure.

A direct method for the regioselective construction of benzimidazolones is reported wherein a single palladium catalyst is employed to couple monosubstituted urea substrates with differentially substituted 1,2-dihaloaromatic systems. In this method, the catalyst is able to promote a cascade of two discrete chemoselective C-N bond-forming processes that allows the highly selective and predictabl...

The title compound, C(10)H(13)N(3)S, was prepared by the reaction of 4-ethyl-thio-semicarbazide and benzaldehyde. The dihedral angle between the benzene ring and the thio-urea unit is 8.96 (7)° and an intra-molecular N-H⋯N hydrogen bond generates an S(5) ring. In the crystal, inversion dimers linked by pairs of N-H⋯S hydrogen bonds generate R(2) (2)(8) loops.