Crystal and molecular structures of butan-2-one p-nitrophenylhydrazone (1), propanal 2,4-dinitrophenylhydrazone (2), dimethyl 2-oxo-propanedioate phenylhydrazone (3), and dimethyl 2-oxopropanedioate 2,4-dinitrophenylhydrazone (4): hydrogen bonding and bond order in phenylhydrazones

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dc.contributor.authorBrian, Vickery
dc.contributor.authorWilley, G. R.
dc.contributor.authorDrew, M. G. B.
dc.date.accessioned2014-08-08T11:37:43Z
dc.date.available2014-08-08T11:37:43Z
dc.date.issued1981
dc.descriptionDOI: 10.1039/P29810000155en_US
dc.description.abstractCrystals of the title compound (1), C10H13N3O2, are monoclinic, a= 4.119(11), b= 18.992(12), c= 13.992(10)Å, β= 96.0(1)°, space group P21/c, Z= 4. Compound (2), C9H10N4O4, is monoclinic a= 5.333(7), b= 11.488(8), c= 17.713(10)Å, β= 95.0(1)°, space group P21/c, Z= 4. Compound (3), C11H12N2O4, is monoclinic, a= 21.331(14), b= 4.153(10), c= 13.640(12)Å, β= 102.8(1)°, space group P21/a, Z= 4. Compound (4), C11H10N4O8, is monoclinic, a= 11.198(8), b= 14.779(9), c= 8.443(7)Å, β= 92.4(1)°, space group P21/a, Z= 4. All four structures were solved by the statistical method using the SHEL-X-76 system of programs, and refined using full matrix least squares. The numbers of reflexions used in refinement and the final R values are (1) 330, 0.103; (2) 611, 0.059; (3) 863, 0.061; and (4) 1 274, 0.070, respectively. In all cases the (NO2)–Ar–NH–N C–(C O) fragment is essentially planar. The NO2 HN and C O HN separations suggest that there is substantial intramolecular hydrogen bonding. In addition in compound (2) there is evidence for intermolecular as well as intramolecular NO2 H–N bonding in the crystal. In phenylhydrazones whose structures are known, there is an inverse relationship between Ar–NH and N–N bond lengths, and a direct relationship between Ar–N(H) and N C bond lengths.en_US
dc.identifier.citationJournal of the Chemical Society, Perkin Transactions 2 Issue 1, 1981 155-160en_US
dc.identifier.issn1472-779X
dc.identifier.other1364-5471
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/10859
dc.language.isoenen_US
dc.publisherRoyal Society of Chemistryen_US
dc.titleCrystal and molecular structures of butan-2-one p-nitrophenylhydrazone (1), propanal 2,4-dinitrophenylhydrazone (2), dimethyl 2-oxo-propanedioate phenylhydrazone (3), and dimethyl 2-oxopropanedioate 2,4-dinitrophenylhydrazone (4): hydrogen bonding and bond order in phenylhydrazonesen_US
dc.typeArticleen_US
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