D. Nguyen-Huy

A binuclear platinum(II) complex using trans-1,2-diaminocyclobutane as a bridging ligand

Abstract Trans-1,2-diaminocyclobutane reacted with K[PtCl3(dmso)] to give the binuclear complex trans-PtCl2(dmso)[μ-trans-H2N (cyclo-C4H6)NH2]trans-PtCl2(dmso). The crystal structure showed an NCCN dihedral angle of 99(2) ° for the bridging diamine ligand.

Bis­[1‐(p‐chloro­phenyl)‐5‐iso­propyl­biguanide‐κ2N2,N4]­nickel(II) dichloride di­methyl­form­amide solvate

The asymmetric unit of the title compound, [Ni(C(11)H(16)ClN(5))(2)]Cl(2).C(3)H(7)NO, contains one monomeric nickel(II) complex cation, two Cl(-) anions and one dimethylformamide solvent molecule. The Ni atom is coordinated to each of two 1-(p-chlorophenyl)-5-isopropylbiguanide (proguanil) ligands via two N atoms. The complex exhibits a square-planar coordination, with the Ni atom lying 0.021 (2) A out of the basal plane. The crystal packing is characterized by several hydrogen bonds.

Crystal structure of diaquabis(aspirìnato)cadmìum(II),Cd(H2O)2(C9H9O5)2

Ci8Hi8CdOio, monoclinic, C12/cl (no. 15), a = 25.971(6) A, b = 7.369(2) A, c = 10.752(5) Â, P = 106.46(4)°, V = 1973.4 A, Z = 4, Rg{(F) = 0.026, wRlef(F) = 0.035, T= 293 K. Source of material In the synthesis of diaquabis(aspirinato)cadmium(II), a solution of sodium acetylsalicylate was prepared by neutralizing 1.6 g (0.01 mol) of acetylsalicylic acid in 15 mL of water at 273 K with a solution of 50 % NaOH. The final pH of the solution was in the range of 8.0 to 9.0. The CdCh solution, prepared by dissolving 1.542 g (0.005 mol) of Cd(N03)2 in 30 mL of water, was added to a stirred solution of sodium acetylsalicylate during a period of a few minutes. This solution was left upon standing for 24 hours. Colorless crystalline material precipitated slowly and was removed by filtration, washed with water, and left to dry at room temperature. Discussion Since zinc and cadmium belong to the same group 12 of the Periodic System of Elements, this study is an extension of an ongoing crystal structure investigation of non-steroidal zinc carboxylate complexes as anti-inflammatory and anticonvulsant drug agents

Crystal structure of bis[(p-chlorophenyl)isopropylbiguadinium] tetrachloroplatinate(II) bisdimethylformamide, C14H24Cl3N6OPt0.5, and of bis[(p-chlorophenyl)isopropylbiguadinium]hexachloroplatinate(IV) bisdimethylformamide, C28H46Cl8N12O2Pt

Abstract C14H24Cl3N6OPt0.5, triclinic, P1̅ (No. 2), a = 9.347(2) Å, b = 10.228(2) Å, c = 11.503(3) Å, α = 72.46(2)°, β = 87.64(2)°, γ = 85.90(2)°, V = 1045.7 Å3, Z = 2, ρm= 1.61 g·cm-3,Rgt(F) = 0.031, wRref(F2) = 0.069, T = 293 K. C28H46Cl8N12O2Pt, monoclinic, P121/n1 (No. 14), a = 10.604(2) Å, b = 9.996(3) Å, c = 21.103(7) Å, β = 101.23(2)°, V = 2194 Å3, Z = 2, ρm= 1.61 g·cm-3, Rgt(F) = 0.038, wRref(F2) = 0.119, T = 293 K.