Electric Literature of 14187-32-7, Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.14187-32-7, Name is Dibenzo-18-crown-6, molecular formula is C20H24O6. In a patent, introducing its new discovery.
Benzo-and dibenzo-18-crown-6 (1) and (2) from charge-transfer complexes with tetracyanoethylene (TCNE) in chloroform with association constants of 2.6 +/- 0.2 and 4.5 +/- 0.4 l mol-1.In the presence of 1 equiv. of t-butylammonium perchlorate (ButNH3ClO4) a solid ternary complex of (2), TCNE, and ButNH3ClO4 is formed.Single-crystal X-ray analysis of a similar ternary complex of (2), ButNH3ClO4 and 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) revealed the close proximity of the perchlorate anion and DDQ.Ternary complexes of TCNE, crown ethers (1)-(3), and salts with nucleophilic anions (Br-, and Cl-, and F-) react to give the TCNE-. radical anion as proven by e.s.r. spectroscopy.In the presence of water and/or oxygen 18-crown-6 (3), TCNE, and ButNH3Br react to yield the 18-crown-6xButNH3(NC)2C=C(CN)O complex.
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