For the first time experimental study of complexation acrylonitrile molecule (CH2=CHCN, noted AN) with water has been undertaken from a vibrational point view as well homodimer (AN)2 in solid neon 80 to 6000 cm−1 using Fourier transform infrared spectroscopy. From concentration effects and help theoretical results we have identified several transitions for AN homodimer, AN-H2O, AN-(H2O)2, (AN)2...

The DLR airborne water vapour differential absorption lidar (H2O DIAL) was employed as the core instrument on board the research aircraft Falcon 20 to validate the water vapour products of MIPAS on ENVISAT. During a dedicated campaign which was co-ordinated with the high-flying aircraft M55 Geophysika the H2O DIAL measured the 2-dimensional water vapour distribution as well as aerosol propertie...

A combined variable-temperature and multiple field 17O NMR, EPR and NMRD study has been performed for the first time on gadolinium(III) complexes of cryptand ligands, L1 and L2, where L1 contains three 2,2'-bipyridine units ([bpy.bpy.bpy]) and L2 is the disubstituted methyl ester derivative of L1. The experimental data have been analysed in a simultaneous fit in order to determine parameters fo...

Mononuclear Ru(III) complexes of the type [Ru(LL)Cl2(H2O)] (LL = monobasic tridentate Schiff base anion: (1Z)-N'-(2-{(E)-[1-(2,4-dihydroxyphenyl)ethylidene]amino}ethyl)-N-phenylethanimidamide [DAE], 4-[(1E)-N-{2-[(Z)-(4-hydroxy-3-methoxybenzylidene)amino]ethyl}ethanimidoyl]benzene-1,3-diol [HME], 4-[(1E)-N-{2-[(Z)-(3,4-dimethoxybenzylidene)amino]ethyl}ethanimidoyl]benzene-1,3-diol [MBE], and N-...

The simplest derivative of 2-(hydroxyimino)carboxylic acids, glyoxilic acid oxime (gaoH2), was used as a model compound for investigation of the metal-ligand interactions in a series of metal complexes: Cu(gaoH)2(H2O)2, Zn(gaoH)2(H2O)2, Co(gaoH)2(H2O)2, Ni(gaoH)2(H2O)2, [Cd(gaoH)2(H2O)2]H2O, K[Pd(gao)(gaoH)] and K[Pt(gao)(gaoH)]3/4H2O. The coordination abilities of the active ligand forms, gaoH...

The hydroperoxy radical (HO2) plays a critical role in Earth's atmospheric chemistry as a component of many important reactions. The self-reaction of hydroperoxy radicals in the gas phase is strongly affected by the presence of water vapor. In this work, we explore the potential energy surfaces of hydroperoxy radicals hydrogen bonded to one or two water molecules, and predict atmospheric concen...

achillea tenuifolia lam. (asteraceae) afforded a dichloromethane fraction from which three known compounds β-sitosterol (compound1), 5-hydroxy, 4',6,7– trimethoxy flavone (salvigenin compound 2), and methyl-gallate (compound 3) were isolated for the first time. the structure of isolated compounds was elucidated by different spectroscopic methods. applying the molar-ratio method, the comple...

Complexes of tailor-made ligands with life essential metal ions may be an emerging area to answer the problem of multi-drug resistance (MDR). The coordination complexes of VO(II), Co(II), Ni(II) and Cu(II) with the Schiff bases derived from 2-hydroxyacetophenone/2-chlorobenzaldehyde with 2-amino-4-chlorophenol were synthesized and characterized by elemental analysis, molar conductance, electron...