Table 2. Elastic Constants in Voigt Notation in GPa for MIL-47(V) with Various Step Sizes δ in Å and Displacements N^a.

N	δ										λ1	λ6
2	0.005	45.11	85.16	34.58	46.26	7.24	10.80	24.14	16.00	49.11	4.59	125.52
	0.015	40.93	83.45	29.41	43.84	9.43	11.04	19.95	12.00	48.19	1.18	118.65
	0.020	39.90	80.61	27.33	43.45	7.05	7.22	19.00	10.49	47.04	–0.09	114.36
4	0.005	41.80	83.49	32.90	46.48	0.98	10.76	22.47	14.44	47.58	0.98	121.07
	0.015	38.13	82.86	29.70	43.72	9.89	11.42	18.74	11.43	48.10	1.32	117.32
	0.020	37.54	79.43	26.30	43.91	6.80	4.39	17.72	9.07	46.03	–0.31	111.36

^aThe smallest and largest eigenvalues are denoted λ₁ and λ₆, respectively, with negative eigenvalues denoted in bold.