STRUCTURES OF (FERROCENYLMETHYL)TRIMETHYLAMMONIUM IODIDE AND HEXA-N-METHYLFERROCENE-1,1'-DIYLBIS(METHYLAMMONIUM IODIDE)

(Ferrocenylmethyl)trimethylammonium iodide (1), [C14-H20FeN][I], M(r) = 385.07, monoclinic, P2(1)/c, a = 8.6236 (5), b = 13.5926 (10), c = 12.8623 (6) angstrom, beta = 102.792 (4)-degrees, V = 1470.3 (2) angstrom3, Z = 4, T = 293 K, F(000) = 760, D(x) = 1.74g cm-3, Mo Kalpha, lambda = 0.71069 angstrom, mu = 3.08 mm-1, R = 0.024 for 4075 observations [I > 3sigma(I)]. The [{(C5H5)Fe(C5H4)}-CH2N(CH3)3]+ cation is involved in a three-dimensional network of C-H...I- interactions (both the cation and anion residing in general positions). The shortest C...I distances are 3.954 (2), 3.992 (2) and 4.009 (3) angstrom. Hexa-N-methylferrocene-1, 1'-diylbis(methylammonium iodide) (2), [C18H30FeN2].2[I], M(r) = 584.10, monoclinic, C2/c, a = 27.1457 (12), b = 12.3446 (6), c = 14.5295 (10) angstrom, beta = 115.909 (4)-degrees, V = 4379.5 (4) angstrom3, Z = 8, T = 293 K, F(000) = 2264, D(x) = 1.772 g cm-3, Mo Kalpha, lambda = 0.71069 angstrom, mu = 3.48 mm-1, R = 0.031 for 4482 observations [I > 3sigma(I)]. In (2), the [Fe{C5H4)CH2-N(CH3)3}2]2+ cation (which has approximate twofold symmetry) and one of the anions reside in general positions. Another iodide resides on a twofold axis, while a third iodide lies on an inversion centre. A more extensive three-dimensional network of C-H...I- interactions is present in (2) than in (1) and involves all three of the iodide anions. The shortest C...I- contacts are 3.733 (4) and 3.848 (4) angstrom and involve the iodide which resides in a general position (all three iodides have C...I contacts < 4.1 angstrom).