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Binuclear mesogenic copper(i) isocyanide complexes with an unusual inorganic core formed by two tetrahedra sharing an
Mohamed Benouazzane1, Silverio Coco, Pablo Espinet
1Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, E-47005 Valladolid, Spain.
Inorganic Chemistry
|October 29, 2002
Abstract:
The preparation of binuclear mesogenic copper(I) isocyanide complexes [CuX(CNR)(2)](2) (X = halogen; R = C(6)H(4)C(6)H(4)OC(10)H(21) (L(A)), C(6)H(4)COOC(6)H(4)OC(n)H(2n+1)((L(B)), C(6)H(2)(3,4,5-OC(n)H(2n+1))(3) (L(C))) with an unusual tetrahedral core is described. The copper complexes with L(A) are not liquid crystals, but the Cu-L(B) complexes show SmA mesophases and the Cu-L(C) derivatives display hexagonal columnar mesophases, some of them at room temperature. The relationship between the molecular structure of the complexes and their thermal behavior is discussed.