The study of quantized vortex lines has been advanced hy the technique of vortex photography. This paper prov~dex an overview of the information which has been acquired thus far from this method. Stationary cortex states are ohser\ed which are very similar to those predicted from theory. In addition types of dynamical phenomena are observed. such a\ collective oscillations and the acceleration ...

In the title mol-ecule, C(17)H(20)O(8), the two pyran rings form a dihedral angle of 61.2 (2)°. The two hy-droxy-methyl groups are each disordered over two sets of sites in a 0.764 (3):0.236 (3) ratio. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into layers parallel to the ac plane.

The crystal of the title compound, C(21)H(23)NO(2), was chosen from a conglomerate formed by a racemic mixture. An intra-molecular hydrogen bond is formed between hy-droxy group and heterocyclic N atom of the aza-bicyclo-[3.2.1]octan-3-one system. The crystal structure is stabilized by C-H⋯O inter-actions between aliphatic C-H groups and the carbonyl O atom. For the title chiral crystal, the hi...

The aromatic rings of the title compound, C(13)H(10)O(3)·H(2)O, are aligned at dihedral angles of 20.6 (1) and 40.8 (1)° with respect to the triangular C(ar-yl)-C(=O)-C(ar-yl) fragment. The hy-droxy groups are each hydrogen-bond donors to separate water mol-ecules, the water mol-ecule itself being hydrogen-bonded to one hy-droxy group and one carbonyl group. The water mol-ecule exists in an unu...

There are two independent mol-ecules in the asymmetric unit of the title phen-oxy-ethanol derivative, C10H14O2, Each molecule has an approximately planar structure except for the hy-droxy groups (r.m.s. deviations = 0.0281 and 0.0144 Å). The ethyl-enedi-oxy groups have a gauche conformation. In the crystal, the mol-ecules form O-H⋯O hydrogen-bonded chains along the a axis.

The title compound, C10H10N4OS, is nearly planar with the mean planes of the hy-droxy-benzyl and triazole rings inclined at an angle of only 3.2 (7)°. In the crystal, O-H⋯N hydrogen bonds between the hy-droxy group and the triazole ring in concert with weak N-H⋯S inter-molecular inter-actions between the triazole ring and thione group form chains along [-210] enclosing R 2 (2)(8) graph-set moti...

The tridentate Schiff base ligand in the title compound, [V(C(16)H(14)N(2)O(3))(CH(3)O)O], has its O, N and O' atoms spanning three basal positions of the square-based-pyrimidally V(V) atom. The fourth basal site is occupied by a methoxo ligand, which results from a deprotonated methanol solvent molecule, and the oxido ligand occupies the apical position. The hy-droxy H atom forms an intra-mole...

The deprotonated Schiff base ligand in the title compound, [Ni(C(8)H(8)N(3)O(2)S)(C(18)H(15)P)]Cl, functions as an N,O,S-chelating anion to the phosphine-coordinated Ni atom, which exists in a distorted square-planar geometry. The hy-droxy group forms an intra-molecular O-H⋯O hydrogen bond. The two amino groups of the cation are hydrogen-bond donors to the chloride anion; the hydrogen bonds gen...

The title compound, C20H26O6, is chiral and crystallizes as a racemate: the relative configuration of the stereogenic centres is 1R*,2R*,3S*,4R*. The cyclo-hexane ring has a chair conformation. The ethyl fragment of the eth-oxy-carbonyl group in the 3-position is disordered over two sets of sites in a 0.650 (6):0.350 (6) ratio. The hy-droxy group acts as a bifurcated hydrogen-bond donor, formin...

In the title compound, C15H17N3OS, the dihedral angle between the mean planes of the 2-hy-droxy-napthyl ring system and the hydrazinecarbo-thio-amide group is 73.7 (3)°. In the crystal, weak O-H⋯S and C-H⋯O inter-actions and π-π stacking inter-actions involving one of the hy-droxy-napthyl rings with a centroid-centroid distance of 3.6648 (14) Å are observed, forming infinite chains along [010]....