[Hg7As4I3](SnI3): Trapping the SnI31– Anion in the Cavities of the Unprecedented Mercury-Arsenic-Iodine Network

✍ Scribed by Andrei V. Olenev; Alexei I. Baranov; Andrei V. Shevelkov; Boris A. Popovkin

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 394 KB
• Volume: 2000
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(200002)2000:2<265::aid-ejic265>3.0.co;2-a

✦ Synopsis

A novel host-guest compound [Hg 7 As 4 I 3 ](SnI 3 ) has been octahedra, which share corners, and contains an additional iodine atom connected to one of the mercury vertices. The prepared by a standard ampoule technique and its crystal structure was determined. It crystallizes in a cubic system SnI 3 1-anion has the shape of a pyramid with the tin atom in a vertex. According to the quantum-chemistry calculations, [space group P2 1 3, a = 13.110(1) A ˚, Z = 4] with a unique structure type. The crystal structure comprises two parts: the the geometry of the anion deviates substantially from the equilibrium one, and is influenced by the distant mercury three-dimensional [Hg 7 As 4 I 3 ] 1+ host network, and the SnI 3 1guest anions encapsulated in the cavities of the network. The atoms of the host network. network is built from the As 2 Hg 7 bitetrahedra and As 2 Hg 6 observed in both types of compounds, indicating the weakare partially (40%) filled by zero-valent mercury atoms. Sur-