Structural diversity in organoindium iodides
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The reactions of the two-arm arylithium [2, 6-(Me2NCH2)2C6H3]Li with InI3, and i-PrInI2 afforded the diiodide [2, 6-(Me2NCH2)2C6H3]InI2(3) and the monoiodide [{2, 6-(Me2NCH2)2C6H3){i-Pr}InI] (4), respectively. The corresponding one-arm derivatives [{2-(Me2NCH2)C6H4}InI2]2 (5) and [{2-(Me2NCH2)C6H4}{i-Pr}InI]2 (6) were formed via the reactions of [2-(Me2NCH2)C6H4]Li with InI3 and i-PrInI2, respectively. The four new compounds have been characterized on the basis of elemental analysis, 1H and 13C NMR, and mass spectroscopy. The solid-state structures of (3-6) have been established by X-ray crystallography: (3), is monomeric, (5), and (6) are dimeric, and (4) possesses a zig-zag chain-type structure with In-I-In bridges. Single-crystal data are as follows: (3), triclinic, P1, with a = 8.951(1), b = 11.523(1) c = 16.988(1), = 87.05(1), = 88.51(1), = 84.73(1), V = 1742.1(3)3, Z = 4, d (calcd) = 2.135 gcm3, 5670 observed reflections, and R = 0.0465 (Rw = 0.0558); (4), monoclinic, Cc, with a = 9.055(1), b = 25.683(4), c = 15.865(3), = 90.49(l), V = 3690(2)3, Z = 8, d (calcd) = 1.714 gcm3, 3895 observcd reflections, and R = 0.0761 (Rw = 0.1038); (5), triclinic, P1, with a = 8.783(1), b = 8.976(1), c = 18.493(3), = 99.42(1), = 93.64(1), = 110.31(1), V = 1337.4(3)3, Z = 4, d (calcd) = 2.497 g cm3, 5427 observed reflections, and R = 0.0560 (Rw = 0.1212); (6), monoclinic, P21/n, with a = 9.637(2), b = 16.162(2), c = 10.317(1) = 114.04(2), V = 1467.6(7)3, Z = 4, d (calcd) = 1.896 g cm3, 2578 observed reflections, and R = 0.0474 (Rw = 0.0419). 1995 OPA.
