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000047475 084__ $$2WoS$$aChemistry, Physical
000047475 084__ $$2WoS$$aPhysics, Atomic, Molecular & Chemical
000047475 1001_ $$0P:(DE-HGF)0$$aPlenge, J.$$b0
000047475 245__ $$aBond strength of chlorine peroxide
000047475 260__ $$aWashington, DC$$bSoc.$$c2005
000047475 300__ $$a6730 - 6734
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000047475 440_0 $$03693$$aJournal of Physical Chemistry A$$v109$$x1089-5639
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000047475 520__ $$aThe bond strength of chlorine peroxide (ClOOCl) is studied by photoionization mass spectrometry. The experimental results are obtained from the fragmentation threshold yielding ClO+, which is observed at 11.52 +/- 0.025 eV. The O-O bond strength D(o) is derived from this value in comparison to the first ionization energy of ClO, yielding D(o)298 = 72.39 +/- 2.8 kJ mol(-1). The present work provides a new and independent method to examine the equilibrium constant K(eq) for chlorine peroxide formation via dimerization of ClO in the stratosphere. This yields an approximation for the equilibrium constant in the stratospheric temperature regime between 190 and 230 K of the form K(eq) = 1.92 x 10(-27) cm3 molecules(-1) x exp(8430 K/T). This value of K(eq) is lower than current reference data and agrees well with high altitude aircraft measurements within their scattering range. Considering the error limits of the present experimental results and the resulting equilibrium constant, there is agreement with previous works, but the upper limit of current reference values appears to be too high. This result is discussed along with possible atmospheric implications.
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000047475 7001_ $$0P:(DE-HGF)0$$aKühl, S.$$b1
000047475 7001_ $$0P:(DE-Juel1)129164$$aVogel, B.$$b2$$uFZJ
000047475 7001_ $$0P:(DE-Juel1)129138$$aMüller, R.$$b3$$uFZJ
000047475 7001_ $$0P:(DE-Juel1)129158$$aStroh, F.$$b4$$uFZJ
000047475 7001_ $$0P:(DE-Juel1)VDB14301$$avon Hobe, M.$$b5$$uFZJ
000047475 7001_ $$0P:(DE-HGF)0$$aFlesch, R.$$b6
000047475 7001_ $$0P:(DE-HGF)0$$aRühl, E.$$b7
000047475 773__ $$0PERI:(DE-600)2006031-2$$a10.1021/jp044142h$$gVol. 109, p. 6730 - 6734$$p6730 - 6734$$q109<6730 - 6734$$tThe @journal of physical chemistry <Washington, DC> / A$$v109$$x1089-5639$$y2005
000047475 8567_ $$uhttp://hdl.handle.net/2128/747$$uhttp://dx.doi.org/10.1021/jp044142h
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