Günseli Turgut

2-[(4-Hydroxyphenyl)iminomethyl]-thiophene

The molecular structure of the title compound, C(11)H(9)NOS, has three planar moieties, two of which are rings, namely the hydroxyphenyl and the thiophene, with an angle of 20.76 (10) degrees between them. The crystal structure is stabilized by an O-H.N hydrogen bond and by C-H.O intermolecular interactions. The C.O intermolecular contact distance is 3.443 (2) A.

Preparation and Characterization of Chromophor Group Containing Cyclotriphosphazenes: III Bis-Azo Chromophor Carrying Some Cyclotriphosphazenes

Abstract Some new substituted cyclotriphosphazenes were prepared by the reaction of hexachlorocy-clotriphosphazene and 4-hydroxyazo compounds such as 4-hydroxyazobenzene, 4′-ethyl-4-hydroxyazobenzene, 4′-ethyl-4-hydroxyazobenzene, 4′-tertbutyl-4-hydroxyazobenzene, 4′-methoxy-4-hydroxyazobenzene, 3′,4′-dichloro-4-hydroxyazobenzene, 2′-chloro-4-hydroxyazobezene and 2′-methoxy-5′-chloro-4-hydroxyazobenzene. The structure of the compounds with the general formula [NP(OC6H4N=N-Ar)2]3. was determined by UV-VIS, IR, 1H-NMR and elemental analysis.

2-Pyridiniohydrazinium dichloride

Department ofPhysics, Faculty of Arts and Sciences, OndokuzMayis University, 55139 Kurupelit Samsun,TurkeyCorrespondence e-mail: zora@metu.edu.trKey indicatorsSingle-crystal X-ray studyT = 296 KMean (C–C) = 0.002 A˚R factor = 0.026wR factor = 0.068Data-to-parameter ratio = 16.5For details of how these key indicators wereautomatically derived from the article, seehttp://journals.iucr.org/e.Received 23 May 2006Accepted 30 May 2006

(2-Hydroxyethyl)hydrazinium(2+) dichloride.

The crystal structure of the title compound, C2H10N2O(2+).2Cl-, is built up from one 2-hydroxyethylhydrazinium(2+) cation and two Cl- anions. The molecular structure is stabilized by O-H...Cl and N-H...Cl hydrogen bonds. The crystal structure is stabilized by one N-H...O and three N-H...Cl interactions, and the three-dimensional network of hydrogen bonds stabilizes the crystal packing. All five hydrazinium H atoms are involved in hydrogen bonds to Cl- anions. The Cl...H contact distances range from 2.122 (15) to 2.809 (14) A.