cation conf E(meV) nL symmetry BC1A 246 2 Pbca C4A 243 2 Pbca C5A 260 1 P21/b11 C6A 240 1 P21/b11 C6A 210 2 Pbca C8A 387 1 P21/b11 CHMA 200 1 P21/b11 Cs a 271 2 Pbca Cs 259 2 I4/mmm MBA rac 326 2 Pnam:004 MBA R 288 2 P212121 MPEA AbSts 101 2 P-1 MPEA BbRtsx 149 2 P11m PEA 182 2 P-1 PEA z 181 2 P-1 PEA x 167 2 Pbca PEA 96 1 P-1 PEA2Br 228 1 P21/b11 PEA4F 254 1 P21/b11 TEA 238 2 P-1