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Spectroscopy Letters
An International Journal for Rapid Communication
Volume 35, 2002 - Issue 2
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Original Articles

A NEW APPROACH TO THE DETECTION AND DETERMINATION OF o-CHLOROBENZYLIDENE-MALONONITRILE (CS) AND ITS CHEMICAL RELATIVES

Ivan G. Binev Institute of Organic Chemistry, Bulgarian Academy of Sciences, Sofia, 1113, BulgariaCorrespondence[email protected]
,
Yuri I. Binev Institute of Organic Chemistry, Bulgarian Academy of Sciences, Sofia, 1113, Bulgaria
&
Ivan N. Juchnovski Institute of Organic Chemistry, Bulgarian Academy of Sciences, Sofia, 1113, Bulgaria
Pages 285-291 | Received 18 May 1999, Accepted 10 Dec 2001, Published online: 15 Feb 2007
 
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ABSTRACT

o-Chlorobenzylidenemalononitrile (CS-gaz) has been found to react with KCN in DMSO and to form practically quantitatively a stable 1:1 adduct of carbanionic structure. The conversion results in the appearance of two very strong ν s C≡N and ν as C≡N IR bands of the dicyanomethide fragment of the adduct at 2161 cm−1 and 2106 cm−1, respectively. These bands can be used to detect selectively and to determine quantitatively CS and its chemical relatives, including in the presence of large quantities of other substances.

ACKNOWLEDGMENT

This work was supported by the Bulgarian Fund of Scientific Research, Contract X-801.

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