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slowstar

木虫 (职业作家)

In the 2000–1700 cm-1 region, a series of weak combination and overtone bands appear and the pattern of the overtone bands reflects the substitution pattern of the benzene ring. Skeletal vibrations, representing C=C stretching, absorb in the 1650–1430 cm-1 range. The C–H bending bands appear in the regions 1275–1000 cm-1 (in-plane bending) and 900–690 cm-1 (out-ofplane bending). The bands of the out-of-plane bending vibrations of aromatic compounds are strong and characteristic of the number of hydrogens in the ring, and hence can be used to give the substitution pattern.
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11楼2010-01-17 17:45:19
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slowstar

木虫 (职业作家)

absorption 和 vibrations后面再加peak好像有些画蛇添足了。
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12楼2010-01-17 17:52:42
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