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Organic Chemistry (8th Edition)
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Portable Network Graphic
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2001-04-27
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2119 cm-1- C=C stretch. Normal range. 2220+10 cm-1 for terminal alkynes, 2225+10 - cm-l for internal alkynes. Absent when symmetrically substituted (overlay 4-octyne). Compare - to the CEN stretch in heptyl I - cyanide (2247 cm-1).
