L. Pech

Tris(8-hydroxyquinolinato)iron(III) Ethanol Solvate

The title compound, tris(8-quinolinolato-N,O)iron(III) ethanol solvate, [Fe(C9H6NO)3].C2H5OH, has slightly distorted octahedral coordination about the central Fe atom which bonds to the N and O atoms of each of three 8-hydroxyquinoline ligands. The solvate molecule of ethanol forms a hydrogen bond with the O atom which is least strongly bound to Fe. The Fe—O and Fe—N bond distances are in the ranges 1.936 (5)–1.996 (5) and 2.125 (6)–2.172 (5) A, respectively.

Synthesis and crystal structure of a solvate of arsenic 4,6-dimethyl-8-quinolinethiolate

A crystallosolvate of arsenic 4,6-dimethyl-8-quinolinethiolate, As[4,6-Me2C9H4NS]3⋅CHCl3 has been synthesized. The molecular and crystalline structures of the compound have been determined by X-ray structural analysis. The influence of the composition and structure of the ligand on the geometry of the coordination environment of the central arsenic atom in the investigated crystal structures of intracomplex compounds of 8-quinolinethiols is discussed.

Crystal structure of platinum 2-methyl- and palladium 2,4-dimethyl-8-hydroselenoquinolinate

(II) has a distorted square-pyramidal coordination, involving two bridging O and two N atoms from a bisN,N’-(salicilidene)-1,3propanediaminato (SALPD) ligand as basal plane. One O atom from a dimethylformamide group for (I) and one O atom from a dioxane molecule for (II) complete the coordination number to five. The inner Cu ions have also irregular square-pyramidal environment, consisting of two bridging O atoms from a SALPD ligand, two bridging N atoms from two azido groups and one N atom from the third azido group. The Cu-N-Cu angles in the central azido bridges are 102.5(2) for (I) and 102.1(3)°. for (II). In (I) and (II), Cu-O-Cu angles in the O bridges have values 104.8(2) and 105.6(2)°.,respectively. The Cu-Cu distance in the azido bridge is 3.1462(7)Å for (I) and 3.1156(15)Å for (II). The Cu-Cu distances in the O bridges are 3.1501(7)Å and 3.1582(15)A in (I) and (II), respectively. Crystal data is given below: (I) [Cu(N3)2Cu(C17H16N2O2)(C3H7NO)],Triclinic P-1,9.211(1),10.394(2),12.941(1)Å, 77.831(1),92.293(2), 71.104(1)°., Iobs>2σ(I)= 3194, R=0.037; (II) [Cu(N3)2Cu(C17H16N2O2)(C4H8O2)], Monoclinic P21/n, 11.292(1),15.413(1),13.610(1)Å, β=97.402(5)°., Iobs>2σ(I)=2575,R= 0.07. Enraf-Nonius CAD-4, ω/2θ scans, MoKα 0.71073 Å