CRYSTAL STRUCTURES OF TWO N-HETEROCYCLIC CARBENE-PALLADACYCLES
The crystal structures of two N-heterocyclic carbene (NHC)-palladacycles are determined by single crystal X-ray diffraction. The intermolecular C—HѱCl hydrogen bonds and SѱS interactions are found in the crystals.
Авторы
Тэги
Тематические рубрики
Предметные рубрики
В этом же номере:
Резюме по документу**
2015. 56, 5
UDC 548.73
CRYSTAL STRUCTURES OF TWO N-HETEROCYCLIC CARBENE-PALLADACYCLES
H.M. Li1, X.Q. Li u 1, Z. Q. Wang2, W.J. Fu2, C. Xu 2
1College of Life Science, Luoyang Normal University, Luoyang, Henan, P. R. China
2College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, Henan, P. R. China
E-mail: xubohan@163.com
Received December, 14, 2014
teractions are found in the crystals. <...> Among them, a combination of a palladacycle framework with highly donating and sterically demanding
NHCs has been reported [ 3—8]. <...> These adducts were far more active than the corresponding
dimeric palladacycle. <...> Recently, we have investigated fluorescent NHC-cyclopalladated 2-(4-ethylphenyl)pyrazine
and 2-(4-methoxyphenyl)pyrazine complexes [ 12 ]. <...> As a part of our continuous research
work, herein, the structures of two NHC [N,N-bis((1,3-di-4-methyl-phenyl)-imidazol)-2ylidene]-palladacycles
are determined by single crystal X-ray diffraction. <...> Single
crystals suitable for X-ray diffraction were obtained by recrystallization from a CH2Cl2-petroleum
ether solution at room temperature. <...> Single crystal X-ray diffraction data of complex 1 and 2 were collected
on a Xcalibur, Eos, Gemini diffractometer with graphite-monochromated Mo h radiation
(y = 0.071073 nm). <...> In the final step of the crystal
structure refinement, hydrogen atoms of idealized —CH2 and —CH3 groups were added and treated
with the riding atom mode; their isotropic displacement factor was chosen as 1.2 and 1.5 times the
preceding carbon atom, respectively. <...> Crystal data and experimental details of the
structure determinations, selected bond distances and angles, and hydrogen bonding parameters are
listed in Tables 1 and 2, respectively. <...> The X-ray diffraction data were deposited with the Cambridge
Crystallographic Data Center (CCDC no. 1039124 for 1 and 1013221 for 2) and are available from the
authors at www.ccdc.cam.ac.uk/data_request/cif.
Li H.M., Liu X.Q., Wang Z.Q., Fu W.J., Xu C., 2015
Revised — February, 21, 2015
The crystal structures of two N-heterocyclic carbene (NHC)-palladacycles are determined by
single crystal X-ray diffraction. <...> Although many structures of palladacycles have been determined <...>
** - вычисляется автоматически, возможны погрешности
Похожие документы: