This paper deals with the development of a new three-dimensional element with two-dimensional kinematic constraints capable of analysing the mechanical behaviour. of the laminated anisotropic shell-type structures. This element, originally developed for the linear 'analysis of plates, is extended for the linear analysis of laminated composite shells. The element can represent arbitrarily curved...

The mol-ecular structure of the neutral mononuclear title complex, [Ni(C(17)H(12)ClN(2)O(2))(2)(CH(3)OH)(2)], is centrosymmetric. The Ni(II) atom, which is located on an inversion center, is in a distorted octahedral coordination, defined by four O atoms from two ligands as well as two O atoms from two methanol mol-ecules. Inter-molecular O-H⋯N hydrogen bonds between the hy-droxy group of metha...

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In the crystal of the title salt, 2C(2)H(8)N(+)·C(6)H(4)O(8)S(2) (2-), the anion lies on a center of inversion. The dimethyl-ammonium cation forms one N-H⋯O hydrogen bond and another bifurcated N-H⋯O hydrogen bond. The hy-droxy group links with the sulfonyl group via an inter-molecular O-H⋯O hydrogen bond. These N-H⋯O and O-H⋯O hydrogen bonds generate a three-dimensional network.

We present high resolution optical echelle spectra and IUE observations during a strong flare on 1993 December 22 in the very active, young, rapidly rotating, single K2 dwarf LQ Hya. The initial impulsive phase of the flare, which started sometime between 2:42 UT and 4:07 UT, was characterized by strong optical continuum enhancement and blue-shifted emission lines with broad wings. The optical ...

The asymmetric unit of the title compound, C(13)H(8)ClI(2)NO, contains half of the mol-ecule situated on a mirror plane. The hy-droxy group is involved in the formation of an intra-molecular O-H⋯N hydrogen bond. π-π inter-actions between the benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.629 (3) Å] form stacks along the b axis. In the crystal, weak C-H⋯O and C-H⋯Cl int...

In the title compound, C(14)H(14)O, the two benzene rings are almost orthogonal [dihedral angle = 87.78 (8) °]. The hy-droxy group lies approximately in the plane of its attached benzene ring [O-C-C-C torsion angle = -17.47 (17)°], and the hydroxyl and methyl groups lie to the same side of the mol-ecule and are gauche to each other. In the crystal, a hexa-meric aggregate mediated by a ring of s...

The title compound, [ZnBr(C(9)H(6)NO)(C(9)H(7)NO)]·CH(3)OH, has its metal atom N,O-chelated by a neutral and a deproton-ated 8-hy-droxy-quinoline ligand. The hy-droxy unit of the neutral ligand is a hydrogen-bond donor to the methanol O atom and the alk-oxy O atom of the monoanionic ligand is a hydrogen-bond acceptor to the methanol O atom. In the crystal, adjacent mol-ecules are linked by thes...

In the crystal structure of the title compound, C(22)H(25)NO(4), inter-molecular O-H⋯O hydrogen bonds involving the hy-droxy group of the 4-(amimometh-yl)phenol fragment and the C=O group connect the mol-ecules into infinite chains along the c axis. Two C atoms of the propyne group are disordered over two sites with occupancy factors of 0.53 (2) and 0.47 (2).