Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences called First incorporation of the tetrahedral [Sn4]4- cluster into a discrete solvate Na4[Sn4]·(NH3)13 from solutions of Na4Sn4 in liquid ammonia, Author is Waibel, Markus; Faessler, Thomas F., which mentions a compound: 75732-01-3, SMILESS is [Cu]C1=C(C)C=C(C)C=C1C, Molecular C9H11Cu, Product Details of 75732-01-3.
Treatment of solutions of Na4Sn4 in liquid NH3 with CuMes (Mes = mesityl) and 18-crown-6 afforded crystals Na4[Sn4]·(NH3)13. The structure features anionic units {Na7[Sn4]2} and sep. Na cations, both fully solvated by NH3 mols.
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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com