najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2018-9-1-33-37najo-1369Research ArticleСтатьиCrystal structure and Raman spectra of molecular complex {Cd(Et2dtc)}2·DABCO ·C60·(DABCO)2 at high pressureKuzminA. V.

142432 Chernogolovka, Moscow region

KonarevD. V.

142432 Chernogolovka, Moscow region

KhasanovS. S.

142432 Chernogolovka, Moscow region

MeletovK. P.

142432 Chernogolovka, Moscow region

Institute of Solid State Physics, Russian Academy of SciencesRussian FederationInstitute of Problems of Chemical Physics, Russian Academy of SciencesRussian Federation201824082025913337Copyright © Kuzmin A.V., Konarev D.V., Khasanov S.S., Meletov K.P., 20252025Kuzmin A.V., Konarev D.V., Khasanov S.S., Meletov K.P.Kuzmin A.V., Konarev D.V., Khasanov S.S., Meletov K.P.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1369

The crystal structure of the molecular donor-acceptor complex {Cd(Et2dtc)}2·DABCO ·C60·(DABCO)2 (where dtc is dithiocarbamate, DABCO is diazabicyclooctane) was studied by X-ray diffraction (XRD) at high pressure using the diamond anvil cell (DAC) technique. The pressure dependence of lattice parameters is smooth and monotonous, the bulk modulus and its derivative B0 = 7.94 GPa and Bt = 9.65 are close to those of pristine C60. Raman spectra of the complex measured at λexc = 532 nm showed a peculiarity in the pressure dependence of Ag(1), Ag(2), Hg(1) and Hg(7) modes of the C60 molecule near 2 GPa. This peculiarity relates to pressure-assisted photopolymerization in the fullerene layers which is suppressed in Raman measurements at λexc = 785 nm showing smooth pressure behavior of phonon modes.

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The authors declare that there are no conflicts of interest present.