配合物[Mn(C13H8N2OBr)2(C5H5N)2]·3C5H5N的结构与磁性研究

The complex [Mn(C₁₃H₈N₂OBr)₂(C₅H₅N)₂]·3C₅H₅N has been synthesized and characterized by X-Ray diffraction, IR and variable temperature (～10 to ～278K) magnetic susceptibility. X-Ray diffraction result for the single crystal shows that the crystal belongs to monoclinic, space group P2₁/c, a=1.0969(3)nm, b=2.0903(5)nm, c=2.0481(6)nm, β=97.366(6), V=4.657(2)nm³, Z=4, D_c=1.47g·cm^-3。     

Structure analysis of [Be(NCS)2(C5H5N)2]

[Be(NCS)₂(C₅H₅N)₂] was prepared and characterized by chemical analysis, FT-IR-analysis, and single crystal X-ray structure analysis. The crystals are orthorhombic with a = 829.30(10) pm, b = 1292.1(2) pm, c = 1313.40(10) pm, space group Pnma. Z = 4. The structure is built up from tetrahedra. Hydrogen bonding between the S-atom of one Be-N-bonded thiocyanate and 1.3-H-atoms of pyridine ligands yield a three dimensional network consisting of folded sheets.     

Darstellung und Kristallstruktur von Tetraphenylphosphonium-Hexathiocyanatorhodat(III), [P(C6H5)4]3[Rh(SCN)6]

Preparation and Crystal Structure of Tetraphenylphosphonium Hexathiocyanatorhodate(III), [P(C₆H₅)₄]₃[Rh(SCN)₆] By treatment of RhCl₃ · n H₂O with KSCN in water a mixture of the linkage isomers [Rh(NCS)_n(SCN)_6–n]^3?, n = 0–2 is formed which is separated by ion exchange chromatography on diethylaminoethyl cellulose. The X-ray structure determination on a single crystal of [P(C₆H₅)₄]₃[Rh(SCN)₆] (monoclinic, space group C1c1, a = 13.620(5), b = 22.929(13), c = 22.899(9) Å, β = 98.55(3)°, Z = 4) confirms the coordination of all ligands via S with the middle Rh? S distance of 2.372 Å and Rh? S? C angles of 109°. The SCN groups are nearly linear with 175° and averaged bondlengths S? C 1.63 and C? N 1.14 Å. The crystal lattice is build up by layers of complex anions and voluminous cations with no specific interactions but which are closely connected by thiocyanate ligands and phenyl rings.