In the title compound, C18H13N3O2·H2O, the oxa-diazole ring forms dihedral angles 7.21 (10) and 21.25 (11)° with the quinoline and benzene rings, respectively. The crystal structure features O-H⋯N hydrogen bonds and is further consolidated by C-H⋯O hydrogen-bonding inter-actions involving the water molecule of hydration.

For the first time, two bipolar AIE-active luminogens (Oxa-pTPE and Oxa-mTPE) constructed from tetraphenylethene and oxadiazole were utilized as fluorescence host materials in sky-blue doped OLEDs and exhibited high efficiencies with L(max), η(C,max), η(P,max) and η(ext,max) of 10,070 cd m(-2), 9.79 cd A(-1), 9.92 Im W(-1) and 5.0%, respectively, broadening the scope for the utilization of AIE ...

In recent years, a series of thiamine derivatives has been synthesized and many investigations have been made both chemically and medically. Allithiamine, a S-alkyl thiamine derivative, was studied in the previous pa per (1) and was found to have polarographically a similar behavior to thia mine. In the present experiment, polarographic investigations on diacetyl thiamine (DAT) and dibenzoylthi...

In the title compound {systematic name: N-[(4R,5R)-3,11-dioxo-10-oxa-6-thia-2-aza-tricyclo-[6.3.0.0(2,5)]undec-1(8)-en-4-yl]-2-phenyl-acetamide}, C(16)H(14)N(2)O(4)S, the four- and five-membered rings adopt planar conformations (with r.m.s. deviations of 0.0349 and 0.0108 Å respectively) while the six-membered ring adopts a half-chair, or envelope-like, conformation with the S atom in the flap ...

The title complex, [Mn(NCS)(2)(C(13)H(19)NO(4))] {systematic name: [3,6,9,12-tetra-oxa-18-aza-bicyclo-[12.3.1]octa-cosa-14(18),15,17-triene-κ(5)N,O,O',O'',O''']bis-(thio-cyanato-κN)manganese(I-I)}, was obtained by the reaction of MnCl(2)·4H(2)O and NaSCN with pyridino-15-crown-5. The Mn(2+) center has a distorted penta-gonal bipyramidal coordination geometry, coordinated by four O atoms and one...

The title compound, C24H29NO4, is the product of a Petrenko-Kritchenko condensation of 1,5-bis-(2-formyl-phen-oxy)-3-oxa-pentane, pentan-3-one and methyl-ammonium acetate in ethanol. The mol-ecule has mirror symmetry. The aza-14-crown-3 ether ring adopts a bowl conformation stabilized by a weak intra-molecular C-H⋯O hydrogen bond. The conformation of the C-O-C-C-O-C-C-O-C polyether chain is t-g...

In the title compound, C(34)H(28)N(2)O(2)S, the piperidine ring adopts a chair conformation. One of the pyrrolidine rings adopts an envelope conformation with the methyl-ene C atom at the flap whereas the other pyrrolidine ring and the thia-zolidine ring adopt half-chair conformations. The mean plane of the dihydro-acenaphthyl-ene ring system [maximum deviation = 0.067 (1) Å] makes dihedral ang...

In the title compound, C(11)H(12)N(2)O(2)S, the thia-zole and phenyl rings are inclined at 56.99 (6)° to one another. The thia-zole ring is planar with an r.m.s. deviation for the five ring atoms of 0.0274 Å. The presence of the phenyl-imine substituent is confirmed with the C=N distance to the thia-zole ring of 1.2638 (19) Å. The mol-ecule adopts a Z conformation with respect to this bond. The...

In the title compound, C(16)H(16)N(2)O(3)S·C(5)H(5)N, the benzene and thia-zole rings of the Febuxostat [2-(3-cyano-4-isobut-yloxy)phenyl-4-methyl-5-thia-zolecarboxylic acid] mol-ecule are almost coplanar [dihedral angle = 2.4 (1)°]. The carboxyl group is coplanar with the thia-zole ring [O-C-C-C and O-C-C-S torsion angles of -0.7 (4) and 0.6 (3)°, respectively]. The pyridine mol-ecule of cryst...