19 research outputs found
Hydrophilic poly-ylids derived from 4,4′-bipyridyl: synthesis, structure and membrane-forming characteristics
New metal–sulphur–nitrogen compounds from reactions in liquid ammonia. The X-ray structures of trans-bis(acetophenone dimethylhydrazone-Nα)dichloropalladium(II) and [di(azathien)-1-yl-S1N4][2-(hydrazonoethyl)phenyl]palladium(II)
BRIDGING AMIDO COMPLEXES FROM REACTIONS IN LIQUID-AMMONIA - X-RAY CRYSTAL-STRUCTURE OF [PT(PME2PH)2(MU-NH2)2PT(PME2PH)2](BF4)2
New metal–sulphur–nitrogen compounds from reactions in liquid ammonia. The X-ray structures of trans-bis(acetophenone dimethylhydrazone-Nα)dichloropalladium(II) and [di(azathien)-1-yl-S1N4][2-(hydrazonoethyl)phenyl]palladium(II)
BRIDGING AMIDO COMPLEXES FROM REACTIONS IN LIQUID-AMMONIA - X-RAY CRYSTAL-STRUCTURE OF [PT(PME2PH)2(MU-NH2)2PT(PME2PH)2](BF4)2
Anomalous solution behaviour of isomorphous complexes of zirconium- and hafnium-(IV)
The synthesis of [Zr(IV)(egta)] and [Hf(IV)(egta)] in aqueous solution, where H-4egta = ethylenedioxydiethyl-enedinitrilotetraacetic acid, is reported. The eight-co-ordinate complexes have been characterised by X-ray crystallography, H-1 NMR spectroscopy, mass spectrometry and elemental analysis. The two compounds are isostructural in the solid state. Solution studies by H-1 NMR spectroscopy show that the hafnium analogue has a higher degree of symmetry. In particular, the spectrum of the zirconium complex reveals all of the methylene groups to be inequivalent whereas in the hafnium complex the -N (CH2CO2)2- and the -NCH2CH2O- methylene groups show increased magnetic equivalence.</p
