MOLECULARE STRUCTURES OF TAUTOMERIC FORMS OF BENZOYLACETONE BENZOYLHYDRAZONE

Authors
KRAUDELT H LUDWIG E SCHILDE U UHLEMANN E
Citation
H. Kraudelt et al., MOLECULARE STRUCTURES OF TAUTOMERIC FORMS OF BENZOYLACETONE BENZOYLHYDRAZONE, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 51(1), 1996, pp. 95-100
Citations number
10
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
51
Issue
1
Year of publication
1996
Pages
95 - 100
Database
ISI
SICI code
0932-0776(1996)51:1<95:MSOTFO>2.0.ZU;2-C
Abstract
By crystallization from benzene two tautomeric forms of benzoylacetone benzoylhydrazone were isolated side by side. They were found to be th e pyrazoline(III) and the enhydrazine(II) form. Crystal data: II: a = 9,247(2) Angstrom, b = 9,953(2) Angstrom, c = 16,112(4) Angstrom, alph a = 81,79(1)degrees, beta = 82,74(1)degrees, gamma = 89,94(2)degrees; space group <P(1)over bar>; Z = 4; R = 0,0584; 6197 unique reflexions; III: a = 17,357(6) Angstrom, b = 21,190(7) Angstrom, c = 7,908(5) Ang strom; space group Pccn; Z = 8; R = 0,0553; 1152 unique reflexions.