Lanthanide complexes with mono- and bicyclic macromolecules. Synthesis and spectroscopic studies
作者:A. Seminara、A. Musumeci
DOI:10.1016/s0020-1693(00)93627-2
日期:1980.1
Abstract Complexes of lanthanide(III) chlorides, thiocyanates, nitrates and perchlorates with three cyclic polyethers containing five or six oxygen atoms in the cycle and two bicyclic macromolecules containing five or six oxygen and two nitrogen atoms in the cycles have been prepared and characterized. Possible arrangements around the cation are proposed on the ground of conductivity measurements,
作者:Michael Seitz、Allen G. Oliver、Kenneth N. Raymond
DOI:10.1021/ja072750f
日期:2007.9.1
series of complexes with La-Lu (except Pm) with the ligand TREN-1,2-HOIQO has been synthesized and structurallycharacterized by means of single-crystal X-ray analysis. All complexes are 1D-polymeric species in the solid state, with the lanthanide being in an eight-coordinate, distorted trigonal-dodecahedral environment with a donor set of eight unique oxygen atoms. This series constitutes the first complete
Preparation and characterisation of dithiophosphinato-complexes of yttrium and the lanthanoids
作者:A. Alan Pinkerton、Yisay Meseri、Charly Rieder
DOI:10.1039/dt9780000085
日期:——
Hydrated lanthanoid(III) chlorides react with salts of dithiophosphinic acids in hot ethanolic solution to form the corresponding neutral tris or anionic tetrakis complexes, [Ln(S2PR2)3](R = C6H11) and [Ln(S2PR2)4]–(R = Me, OEt, or C6H11) respectively. The product of the reaction is sterically controlled. Displacement reactions with PPh3O to give mixed complexes are described. The characterisation, structures
水合镧系元素(III)的氯化物与二硫代次膦酸盐在热乙醇溶液中反应,形成相应的中性三或阴离子四环配合物[Ln(S 2 PR 2)3 ](R = C 6 H 11)和[Ln(S 2 PR 2)4 ] –(R = Me,OEt或C 6 H 11)。反应产物在空间上受到控制。PPh 3的置换反应描述了给出混合配合物的O。讨论了所有分离的配合物的表征,结构和光谱性质。将镧系元素-硫键与过渡金属-硫键进行比较
Crystal and molecular structures of [AsPh4][Ln(S2PMe2)4](Ln = Ce or Tm) and their comparison with results obtained from paramagnetic nuclear magnetic resonance data in solution
作者:Stavros Spiliadis、A. Alan Pinkerton、Dieter Schwarzenbach
DOI:10.1039/dt9820001809
日期:——
average Ln–S distances of 2.991 Å(Ce) and 2.870 Å(Tm). The co-ordination polyhedra are D2d, dodecahedra (mmmm isomer) distorted towards the D2 square antiprism, the cerium compound having two independent molecules in the unit cell, both with 222 crystallographic symmetry. Despite the difference in crystallography between the Ce and Tm compounds, the molecularstructures are quite similar in the solid
Dithiophosphinate complexes of the lanthanides. Preparation of the complexes [Ln{S2PR2}4][AsPh4], R = OMe, OPri. Determination of the crystal structurals for Ln = Ce, Er (R = OMe) and Ln = Nd, Ho (R = OPri)
solvent being easily removed in vacuo. The crystalstructures of the complexes [LnS2PR2}4] [AsPh4] have been determined from diffractometer data for Ln = Ce and Er, R = OMe; and Ln = Nd and Ho, r = OPri. [CeS2P(OMe)2}4] [AsPh4]: monoclinic, space group Cc with a = 14.762(3), b = 16.780(4), c = 19.890(3) A and β = 101.09(1)°, R = 0.041. [ErS2P(OMe)2}4] [AsPh4]: isomorphous to the above with a = 14.626(3)