Synthesis and Crystal Structure of [(C1A1(μ-OH)₂A1C1)·18-Crown-6][AIC1₄]₂·8/3 C₆H₅NO₂, a Complex Featuring a Binuclear Aluminum-Containing Cation Threaded Through 18-Crown-6

Abstract

The title compound resulted from the partial hydrolysis of the reaction product of AICI₃, 18-crown-6, and HCl(g) in nitrobenzene. The compound crystallizes in the triclinic space group PI with a = 13.344(2), b = 17.742(3), c = 18.318(3)Å, a = 68.69(1), β = 81.98(1), γ = 68.00(1)°, and D _c = 1.45g cm⁻³ for Z = 3. In the crystal structure the 2+ binuclear aluminum-containing cation is threaded through the crown ether with each aluminum atom coordinated to three crown ether oxygen atoms. The crystal is composed of alternating layers of cations, layers of anions, and bilayers of nitrobenzene molecules.

Key Words:

• Aluminum
• crown ether
• crystal structure
• threaded complex