In the title sulfonamide derivative, C11H10ClN3O2S, the dihedral angle between the pyridine rings is 46.85 (12)°. The N atom of the chloro-pyridine ring is anti to the N-H bond. In the crystal, mol-ecules are linked through N-H⋯N hydrogen bonds into zigzag chains parallel to [001] with a C(7) graph-set motif.

The title compound, C(26)H(38)O(6)·H(2)O, is a mono-ester of a derivative of maleopimaric acid, an abietic-type acid. The two fused and unbridged cyclo-hexane rings adopt approximate chair conformations while the three other three six-membered rings have boat conformations.

The title compound, C(13)H(15)NP(+)·Cl(-), was obtained by hydrolysis of the N-trimethysilyl derivative of methydiphenyl-imino-phosphine. The dihedral angle between the phenyl rings in the cation is 61.5 (3)°. In the crystal structure, inter-molecular N-H⋯Cl hydrogen bonds links the two components, forming a centrosymmetric 2 + 2 aggregate.

The title compound, C(25)H(34)N(2)O(3)S, is a derivative of N'-benzyl-ideneacetohydrazide having substituents on the acetyl and benzylidenyl parts, and displays a planar C(carbon-yl)-NH-NC(anis-yl) fragment [torsion angle = 174.9 (3)°]. The -NH- unit forms an N-H⋯O hydrogen bond with the carbonyl O atom of an inversion-related mol-ecule.

In the title compound, C(11)H(11)F(3)N(2)O, a urea derivative, the best plane through the pyrrole ring makes a dihedral angle of 9.69 (13)° with the benzene ring. The amino H atom is shielded, so that it is not involved in any hydrogen-bonding inter-actions.

The title compound, C(13)H(12)BrNO(4), was obtained from an optically active aniline derivative. The structure was characterized by (1)H NMR, (13)C NMR, MS and X-ray diffraction techniques. 86% of the atoms of the two independent mol-ecules in the asymmetric unit show non-crystallographic inversion symmetry.

The title compound, [Sb(2)(C(6)H(5))(6)(CH(3)O)(2)O]·2CH(3)OH, is the methanol disolvate of a dinuclear triphenyl-anti-mony derivative. The mol-ecule shows C(s) symmetry. The Sb-O-Sb angles cover a range from 89.65 (10)° to 102.08 (13)°. In the crystal structure, two O-H⋯O hydrogen bonds are present.

The title compound, C(15)H(12)N(2)O, is a derivative of 4-(amino-meth-yl)benzonitrile, an important pestcide inter-mediate. In the crystal structure, mol-ecules are linked via inter-molecular N-H⋯O hydrogen bonds, forming infinite chains.

This paper presents a comparative study of different control design methods applied to a nuclear reactor model. A nuclear reactor temperature controller is designed using the H-infinity (H∞) control. This advanced controller is compared with a conventional Proportional–Integral–Derivative controller (PID) controller and a traditional optimal controller design using Linear Quadratic Gaussian (LQ...

There are two independent molecules in the asymmetric unit of the title cyclo-hexa-none derivative, C(14)H(24)OS, in which both cyclo-hexane rings exhibit chair conformations. They are also equatorial to each other, which permits the ethanethiol substituent to be in a syn conformation with the α-H atom of the parent attached cyclo-hexa-none.