TY - JOUR
T1 - Tilt of N2 molecules physintercalated into C24K and C24Rb
AU - Moreh, R.
AU - Pinto, H.
AU - Finkelstein, Y.
AU - Beguin, F.
N1 - Funding Information:
Acknowledgements-We would like to thank H. Ettedgui and M. Fogel for technicala ssistanceT. his work was supportedb y the German-IsraeliF oundationf or Scientific Researcha nd Developmen(tG .I.F.).
PY - 1996/1/1
Y1 - 1996/1/1
N2 - The intercalation of molecular N2 into C24X (X = K, Rb) has been studied using the nuclear resonance photon scattering (NRPS) technique. We found that, in the physintercalated state, the nitrogen resides in the alkali planes, in a molecular form, with the molecular symmetry axis almost parallel to the graphene basal planes. In C24K, the N2 molecules are only intercalated below 200 K, while in the case of C24Rb, the physintercalation process starts at room temperature and the amount of intercalated N2 increases with decreasing T, reaching saturation at around 130 K. These samples were also studied using n-diffraction and the N2 "small" diameter, at 120 K, was found to be 0.290 nm in the (C24K + N2) system and slightly smaller, 0.279 nm, in the (C24Rb + N2) system. This difference in the measured diameters could also be attributed to a smaller tilt angle of the N2 molecule in C24Rb as compared to that in C24K.
AB - The intercalation of molecular N2 into C24X (X = K, Rb) has been studied using the nuclear resonance photon scattering (NRPS) technique. We found that, in the physintercalated state, the nitrogen resides in the alkali planes, in a molecular form, with the molecular symmetry axis almost parallel to the graphene basal planes. In C24K, the N2 molecules are only intercalated below 200 K, while in the case of C24Rb, the physintercalation process starts at room temperature and the amount of intercalated N2 increases with decreasing T, reaching saturation at around 130 K. These samples were also studied using n-diffraction and the N2 "small" diameter, at 120 K, was found to be 0.290 nm in the (C24K + N2) system and slightly smaller, 0.279 nm, in the (C24Rb + N2) system. This difference in the measured diameters could also be attributed to a smaller tilt angle of the N2 molecule in C24Rb as compared to that in C24K.
KW - A. Graphite intercalation compounds
KW - B. N adsorption
KW - C. n-diffraction
KW - D. Molecular orientation
KW - Nuclear resonance photon scattering
UR - http://www.scopus.com/inward/record.url?scp=0030172555&partnerID=8YFLogxK
U2 - 10.1016/0022-3697(95)00372-X
DO - 10.1016/0022-3697(95)00372-X
M3 - Article
AN - SCOPUS:0030172555
SN - 0022-3697
VL - 57
SP - 909
EP - 913
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 6-8
ER -