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Nike Free Run 3.0 V4 formation of mixed ligand hexa coordinated complexes
SAW-devices with the highest resonance frequency (1 GHz) ever reported in chemical sensor applications have been tested. The sensor response increases in a parabolic manner with the resonance frequency, as is shown, in going from 80 MHz to 1 GHz, whereas the noise level only increases approximately linearly. If a linked cyclodextrin in a height of 60 nm is used Nike Free Run 3.0 V4 as a sensitive coating, a sensor response of 61 kHz/1000 ppm of toluene is obtained. This makes the detection of aromatic hydrocarbons, such as toluene or xylene, down to 1 ppm easily possible. The interaction of chromium-thiourea, Cr(tu)3Cl3, with heterocyclic amines and phenyl arsonic acid results in the formation of mixed ligand hexa-coordinated complexes of the type: [Cr(tu)2L2Cl2]Cl, [Cr(tu)2L′2]Cl3, [Cr(tu)2L″]Cl, (where L stands for pyridine, Nike Free Run 5 α, β, and γ-picolines, 2,4- and 2,6-lutidines, quinoline, isoquinoline, and acridine: L′ for o-phenanthroline and 2,2′-dipyridyl; and L″ represents phenyl arsonic acid). All these complexes are characterised by elemental analyses, potentiometric and conductometric measurements and i.r. spectral studies.