M(benzo‐18‐crown‐6)I4 (M = Cd,Hg): Tetraiodide,Iodide–Iodine Adduct,or an Inclusion Compound of Iodine in MI2@(benzo‐18‐crown‐6)? |
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Authors: | Ralph Striebinger Christine Walbaum Ingo Pantenburg Gerd Meyer |
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Abstract: | M(benzo‐18‐crown‐6)I4 (M = Cd, Hg) are obtained as red columnar crystals from the reactions of benzo‐18‐crown‐6 (b18c6), cadmium and mercury iodide, respectively, and iodine in molar ratios of 1:1:2 in acetonitrile. They both crystallize with the orthorhombic crystal system, P212121, a = 833.7(1), b = 1610.9(1), c = 1846.8(1) pm, V = 2480.3(1) 106·pm3, Z = 4, for M = Cd and a = 823.4(1), b = 1616.5(1), c = 1866.1(1) pm, V = 2483.8(2) 106·pm3 for M = Hg. The crystal structures consist of M(b18c6)]I2 molecules which are connected to a slightly lengthened iodine molecule via a secondary contact, according to the formulation I2@MI2@(b18c6)]. |
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Keywords: | Cadmium Mercury Iodine Crown Ether Inclusion Compound |
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