Affiliation:
1. Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, Poland
Abstract
Abstract
(E)-benzil monoxime (or (E)-monoxime of 1,2 diphenyloetandion), which
is the subject of this paper, belongs to the family of bioactive
organic substances. Many of them have been investigated for many years
by inelastic, incoherent neutron scattering spectroscopy (IINS) but
the investigation of (E)-benzil monoxime is absent from
literature. Therefore (E)-benzil monoxime has been investigated using
infrared, and IINS spectroscopy. Dimers of (E)-benzil monoxime were
considered using B3LYP functional (connection of Becke and
Lee–Yang–Parr functionals) combined with the 6-311++G(d,p) basis
set method of quantum chemistry in order to improve the results
obtained for a single molecule. In (E)-benzil monoxime, extra bands
corresponding primarily to hydrogen bond vibrations (γ bending
out of plane of hydrogen bond at 312.3, 372, 470.5, 578.3, 703.5,
748.7, 780.4 cm
–1, σ stretching of hydrogen bond
bridge at 124.3, 140.9, 176.5, 190.1, 223.6, 259.1, 290.5, 501.8,
623.5 cm
–1, δ bending in plane of hydrogen bond
at 1102.4, 1371,1452,1535, 1630.6 cm
–1, λ
bending of hydrogen bond bridge at ca. 40 cm
–1, ν
stretching band OH at 3397 cm
–1) have been
identified. Some of them could be discovered only by using IINS method
and this is the main result of this work. Additionally we'd like to
compare the structure of the compound and the structure of oximes
previously investigated by us . Taking into account the structure and
IINS results for three oximes investigated by us, we can estimate the
difference of hydrogen bond power in those three oximes. Hence the
power of hydrogen bond in the (E)-benzil monoxime seems to be the
smallest in the group of the three compounds: (E)-benzil monoxime,
(E)-2-hydroxyimino-2-cyanoacetic acid ethyl ester (2-oxime), acid K
salt of 2-oxime.
Subject
Physical and Theoretical Chemistry
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献