Darstellung und Kristallstrukturen von [P(C6H5)4][1-(NH3)B10H9] und Cs[(NH3)B12H11] · 2CH3OH

Synthesis and Crystal Structures of P(C₆H₅)₄]1-(NH₃)B₁₀H₉] and Cs(NH₃)B₁₂H₁₁] · 2CH₃OH The reduction of 1-(NO₂)B₁₀H₉]^2? with aluminum in alkaline solution yields 1-(NH₃)B₁₀H₉]^? and by treatment of B₁₂H₁₂]^2? with hydroxylamine-O-sulfonic acid (NH₃)B₁₂H₁₁]^? is formed. The crystal structures of P(C₆H₅)₄]1-(NH₃)B₁₀H₉] (triclinic, space group P1 , a = 7.491(2), b = 13.341(2), c = 14.235(1) Å, α = 68.127(9), β = 81.85(2), γ = 86.860(3)°, Z = 2) and Cs(NH₃)B₁₂H₁₁] · 2CH₃OH (monoclinic, space group P2₁/n, a = 14.570(2), b = 7.796(1), c = 15.076(2) Å, β = 111.801(8)°, Z = 4) reveal for both compounds the bonding of an ammine substituent to the cluster anion.