| Abstract: | Conformation and Cross Linking of (CuCN)6‐Rings in Polymeric Cyanocuprates(I) equation/tex2gif-stack-8.gif Cu2(CN)3—] (n = 2, 3) The alkaline‐tricyano‐dicuprates(I) Rbequation/tex2gif-stack-9.gifCu2(CN)3] · H2O ( 1 ) and Csequation/tex2gif-stack-10.gifCu2(CN)3] · H2O ( 2 ) were synthesized by hydrothermal reaction of CuCN and RbCN or CsCN. The dialkylammonium‐tricyano‐dicuprates(I) NH2(Me)2]equation/tex2gif-stack-11.gifCu2(CN)3] ( 3 ), NH2(iPr)2]equation/tex2gif-stack-12.gifCu2(CN)3] ( 4 ), NH2(Pr)2]equation/tex2gif-stack-13.gifCu2(CN)3] ( 5 ) and NH2(secBu)2]equation/tex2gif-stack-14.gifCu2(CN)3] ( 6 ) were obtained by the reaction of dimethylamine, diisopropylamine, dipropylamine or di‐sec‐butylamine with CuCN and NaCN in the presence of formic acid. The crystal structures of these compounds are built up by (CuCN)6‐rings with varying conformations, which are connected to layers ( 1 ) or three‐dimensional zeolite type cyanocuprate(I) frameworks, depending on the size and shape of the cations ( 2 to 6 ). Crystal structure data: 1 , monoclinic, P21/c, a = 12.021(3)Å, b = 8.396(2)Å, c = 7.483(2)Å, β = 95.853(5)°, V = 751.4(3)Å3, Z = 4, dc = 2.728 gcm—1, R1 = 0.036; 2 , orthorhombic, Pbca, a = 8.760(2)Å, b = 6.781(2)Å, c = 27.113(5)Å, V = 1610.5(5)Å3, Z = 8, dc = 2.937 gcm—1, R1 = 0.028; 3 , orthorhombic, Pna21, a = 13.504(3)Å, b = 7.445(2)Å, c = 8.206(2)Å, V = 825.0(3)Å3, Z = 4, dc = 2.023 gcm—1, R1 = 0.022; 4 , orthorhombic, Pbca, a = 12.848(6)Å, b = 13.370(7)Å, c = 13.967(7)Å, V = 2399(2)Å3, Z = 8, dc = 1.702 gcm—1, R1 = 0.022; 5 , monoclinic, P21/n, a = 8.079(3)Å, b = 14.550(5)Å, c = 11.012(4)Å, β = 99.282(8)°, V = 1277.6(8)Å3, Z = 4, dc = 1.598 gcm—1, R1 = 0.039; 6 , monoclinic, P21/c, a = 16.215(4)Å, b = 13.977(4)Å, c = 14.176(4)Å, β = 114.555(5)°, V = 2922(2)Å3, Z = 8, dc = 1.525 gcm—1, R1 = 0.070. |
