Transition chemistry

Encyclopedie, article Histoire Naturelle, vol. 8, 225a (anonymous). Quotation from Jean-Claude Guidon, The Still Life of a Transition Chemistry in the Encyclopedie (unpublished PhD thesis, University of Wisconsin, 1974), 3i4 3i5. 

Weis, R. M. (1991). Fluorescence microscopy of phospholipid monolayer phase transitions. Chemistry and Physics of Lipids 57 227-239. 

Lang, J. W., X. B. Yan, W. W. Liu, R. T. Wang, and Q. J. Xue. 2012. Influence of nitric acid modification of ordered mesoporous carbon materials on their capacitive performances in different aqueous electrolytes. Journal of Power Sources 204 220-229. Wang, D. W., F. Li, L. C. Yin et al. 2012. Nitrogen-doped carbon monolith for alkaline supercapacitors and understanding nitrogen-induced redox transitions. Chemistry -A European Journal 18 5345-5351. 

It was the extreme carefulness of daily analytical work that strengthened the periodic system, rather than the other way around. Furthermore, analytical results obtained by chemists in Sweden could be used to argue for the system in other places, countries, laboratories, and so on. Perhaps one could say that Mendeleev s periodic system transited chemistry in Sweden—with its classifying, analytical, and atheoretical features—and that the system thereby became strengthened in its future travels, even in its travels back to Mendeleev. 

Simplest examples are prepared by the cyclic oligomerization of ethylene oxide. They act as complexing agents which solubilize alkali metal ions in non-polar solvents, complex alkaline earth cations, transition metal cations and ammonium cations, e.g. 12—crown —4 is specific for the lithium cation. Used in phase-transfer chemistry. ... 

In an electron spin resonance spectrometer, transitions between the two states are brought about by the application of the quantum of energy hv which is equal to g H. The resonance condition is defined when hv = g H and this is achieved experimentally by varying H keeping the frequency (v) constant. Esr spectroscopy is used extensively in chemistry in the identification and elucidation of structures of radicals. 

Lee S-Y 1995 Wave-packet model of dynamic dispersed and integrated pump-probe signals in femtosecond transition state spectroscopy Femtosecond Chemistry ed J Manz and L Wdste (Heidelberg VCH)... 

Much of the work done on metal clusters has been focused on the transition from cluster properties to bulk properties as the clusters become larger, e.g. the transition from quantum chemistry to band theory [127]. 

Quack M 1981 Faraday Discuss. Chem. Soc. 71 309-11, 325-6, 359-64 (Discussion contributions on flexible transition states and vibrationally adiabatic models statistical models in laser chemistry and spectroscopy normal, local, and global vibrational states)... 

Drickamer H G and Frank C W 1973 Eiectronic Transitions and the High-Pressure Chemistry and Physics of Soiids (London Chapman and Hall)... 

Optical metiiods, in both bulb and beam expermrents, have been employed to detemiine tlie relative populations of individual internal quantum states of products of chemical reactions. Most connnonly, such methods employ a transition to an excited electronic, rather than vibrational, level of tlie molecule. Molecular electronic transitions occur in the visible and ultraviolet, and detection of emission in these spectral regions can be accomplished much more sensitively than in the infrared, where vibrational transitions occur. In addition to their use in the study of collisional reaction dynamics, laser spectroscopic methods have been widely applied for the measurement of temperature and species concentrations in many different kinds of reaction media, including combustion media [31] and atmospheric chemistry [32]. 

Blades A T, Jayaweera P, Ikonomou M G and Kebarle P 1990 Studies of alkaline earth and transition metal M " gas phase ion chemistry J. Chem. Phys. 92 5900... 

Wang L S 2000 Photodetachment photoelectron spectroscopy of transition metal oxide species Photoionization and Photodetaohment Advanced Series in Physical Chemistry 10, ed C Y Ng (Singapore World Scientific)... 

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