84493-41-4

Basic information

• Product Name: I₄⁽²⁺⁾*2AsF₆^(1-) = I₄(AsF₆)2
• Synonyms: I₄⁽²⁺⁾*2AsF₆^(1-) = I₄(AsF₆)2
• CAS NO: 84493-41-4
• Molecular Weight: 885.442
• Mol File: 84493-41-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: I₄⁽²⁺⁾*2AsF₆^(1-) = I₄(AsF₆)2(CAS DataBase Reference)
• NIST Chemistry Reference: I₄⁽²⁺⁾*2AsF₆^(1-) = I₄(AsF₆)2(84493-41-4)
• EPA Substance Registry System: I₄⁽²⁺⁾*2AsF₆^(1-) = I₄(AsF₆)2(84493-41-4)

Safety Data

• Hazardous Substances Data: 84493-41-4(Hazardous Substances Data)

Upstream product

• 7784-36-3 arsenic pentafluoride 
• 7553-56-2 iodine 

Relevant articles and documents

Preparation and solid-state and solution studies of three compounds of the tetraiodine dication I42+: I42+(AsF6-)2, I42+(SbF6-)2, and I42+(Sb3F14-)(SbF 6-)

Iodine is oxidized by AsF5 and SbF5 in solution in sulfur dioxide to give I4(AsF6)2 (1) and I4(Sb3F14)(SbF6) (2), respectively. I4(SbF6)2 (3) was prepared by the reaction of I2Sb2F11 with fluoride ion. Crystals of 1 are monoclinic, space group A2/m, with a = 5.876 (2) ?, b = 9.810 (4) ?, c = 12.411 (5) ?, β = 104.06 (4)°, V = 694.0 (4) ?3, and Dcalc = 4.17 g·cm-3 for Z = 2. Crystals of 2 are also monoclinic, space group P21/c, with a = 8.431 (2) ?, b = 15.968 (4) ?, c = 16.818 (3) ?, β = 100.48 (1)°, V = 2226.4 (8) ?3, and Dcalc = 4.10 g·cm-3 for Z = 4. Crystals of 3 are triclinic, space group P1, with a = 5.995 (1) ?, b = 10.054 (2) ?, c = 9.177 (2) ?, α = 122.85 (1)°, β = 119.08 (1)°, γ = 90.66 (1)°, V = 376.47 (14) ?3, and Dcalc = 4.32 g·cm-3 for Z = 1. The structures of 1 and 2 were solved by means of Patterson functions, and that of 3 was solved by direct methods. The three structures were refined by least squares to final agreement indices of R1 (R2) = 0.050 (0.059), 0.058 (0.062), and 0.066 (0.083) for 812, 3550, and 1316 independent reflections, respectively. 1 and 3 consist of discrete I42+ and AsF6- and SbF6- ions, respectively, and 2 consists of I42+, Sb3F14-, and SbF6- ions. The I42+ cation in all three compounds has a rectangular structure and may be considered to consist of two I2+ cations joined by two long weak bonds. Resonance Raman spectra were obtained from the solid compounds. The spectra had a single line at 232 cm-1 together with several overtones. In solution in SO2 and HSO3F at room temperature, the I42+ ion is dissociated to I2+, but at -78°C in HSO3F and SO2, I42+ is the predominant species.