| Abstract |
The syntheses and structures of a [2x1+1x2] cocrystal [\(CuLNaI)-L-II-Na-I(H2O)(2)\ \(CuL1)-L-II\(2)(NO3) (1) and [3x1+5x1] cocrystal [\((CuL1)-L-II)(2)K-I\(NO3)]center dot[\((CuL1)-L-II)(3)K-2(I)(mu-NO3)\(NO3)]center dot 0.2H(2)O (2) derived from the hexadentate Schiff base compartmental ligand N,N -ethylenebis(3-ethoxysalicylaldimine) (H2L1) are described. Compounds 1 and 2 crystallize in triclillic P (1) over bar and monoclinic P2(1)/c systems, respectively. The structure of 1 consists of the [(CuLNaI)-L-II-Na-1(H2O)(3)](+) cation and two mononuclear [(CuL1)-L-II] moieties. In the dinuclear [(CuLNaI)-L-II-Na-1(H2O)(3)](+) cation, the metal centers are doubly bridged by the two phenolate oxygen atoms. Each of the two coordinated water molecules of the dinuclear unit is encapsulated in the O-4 cavities of the two mononuclear [(CuL1)-L-II] moieties resulting in the formation of a [2x1+1x2] cocrystal. In compound 2, one trinuclear double-decker system [\((CuL1)-L-II)(2)K-I(NO3)] and one pentanuclear triple-decker system [\((CuL1)-L-II)(3)K-2(I)(mu-NO3)\(NO3)] are cocrystallized. Evidently, compound 2 is a [3x1+5x1] cocrystal. Structural resemblance of 3d metal ions with Na(I) and a rare example of double-decker-triple-decker cocrystal are the major outcomes of the present investigation. |
