. 2013 Nov 26;3:3331. doi: 10.1038/srep03331

Table 1. Elastic constants, bulk, shear, and Young's modulli (unit: all in GPa) of stable phases of CaC₆ as well as carbon foam (labeled C₆) at zero pressure.

	P	c₁₁	c₂₂	c₃₃	c₄₄	c₅₅	c₆₆	c₁₂	c₁₃	c₂₃	B	G
C222	19	870	1056	172	36	45	305	124	95	14	284	202
Pmmn	0	480	864	466	228	288	261	68	278	21	283	252
	39	617	1063	593	300	420	314	116	411	68	385	319
Cmcm	126	1435	1188	1596	451	523	535	283	114	183	598	545
C₆: Cmcm	0	450	1141	347	258	276	294	89	279	59	310	266

Table 1. Elastic constants, bulk, shear, and Young's modulli (unit: all in GPa) of stable phases of CaC6 as well as carbon foam (labeled C6) at zero pressure.