High-resolution C-13 NMR studies of high-pressure-polymerized C-60: Evidence for the [2+2] cycloaddition structure in the rhombohedral two-dimensional C-60 polymer

authors	Goze, C; Rachdi, F; Hajji, L; NunezRegueiro, M; Marques, L; Hodeau, JL; Mehring, M
journal	PHYSICAL REVIEW B
keywords	SOLID C-60; PHASE
abstract	We report on C-13 NMR measurements of a rhombohedral two-dimensional polymer of C-60 obtained under high pressure. By spinning the sample up to 12 kHz, we were able to identify six resonances at 149.1, 147.9, 145.2, 139.6, 134.8, and 73.5 ppm. The static distortion of the C-60 molecules induced by the transformation under pressure must be at the origin of the observed inequivalent carbons in the polymer. The C-13 NMR line shape simulation of the obtained spectrum is compatible with the suggested polymeric structures where the C-60 molecules are connected by [2 + 2] cycloadditions.
publisher	AMERICAN PHYSICAL SOC
issn	0163-1829
year published	1996
volume	54
issue	6
beginning page	R3676
ending page	R3678
web of science category	Physics, Condensed Matter
subject category	Physics
unique article identifier	WOS:A1996VD67700002