10138-41-7Relevant articles and documents
Study of complexation of alkyl-substituted 2,2'-dipyrrolylmethene with lanthanide salts by electronic spectroscopy
Rumyantsev,Desoky,Antina
, p. 932 - 936 (2010)
It has been found with the use of electronic spectroscopy that the reaction of alkyl-substituted 2,2'-dipyrrolylmethene with La(III), Pr(III), Sm(III), Dy(III), Ho(III), Er(IIII), and Yb(III) salts leads to the formation of tris(dipyrrolylmethene) complexes. Based on electronic absorption spectroscopy data and formation constants of lanthanide complexes, together with the earlier data, analysis of the nature of M-L bonds in 2,2'-dipyrrolylmethene chelates with p, d, and f elements has been performed. A correlation was found between the complex stability and the polarizing action of the complex-forming ion on the chromophore π system of dipyrrolylmethene, which allows one to classify these heterocyclic ligands with probes highly sensitive to the change in the ratio between the ionic and covalent contributions to coordination interactions. Pleiades Publishing, Ltd., 2010.
Calorimetric study and thermal analysis of [Gd4/3Y2/3(Gly)6 (H2O)4](ClO4) 6·5H2O and [ErY(Gly)6(H2O)4] (ClO4)6·5
Liu, Bei-Ping,Tan, Zhi-Cheng,Lan, Xiao-Zheng,Yu, Hua-Guang,Zhang, Da-Shun,Sun, Li-Xian
, p. 233 - 238 (2003)
Two solid-state coordination compounds of rare earth metals with glycin, [Gd4/3Y2/3(Gly) 6(H2O)4](ClO4) 6·5H2O and [ErY(Gly)6(H2O)4] (
The crystal structures of ErSeI and NaErSe2
St?we
, p. 1639 - 1643 (1997)
It is reported about attempts to synthesize lanthanoide selenidehalides of the formula LnSeX (X = Cl, Br, I) exemplary for Ln = Er. The relative stabilities of these compounds are discussed. X-ray crystal structure analysis revealed for the compounds ErSeBr and ErSeI the FeOCl-structure type (space group Pmmn, Z = 2, a = 406.3(5) pm, b = 559.2(6) pm, and c = 795(1) pm, and a = 418.26(6) pm, b = 558.4(1) pm. and c = 889.0(2) pm, respectively). A corresponding chloride was not found within the scope of this investigation. From the educts Er2Se3 and ErCl3 in the presence of NaCl as flux in Nb-ampoules the compound NaErSe2 was formed instead which crystallines in an α-NaFeO2-type structure (space group R3?m, Z = 3, a = 408.41(2) pm and c = 2067.4(2) pm).
Couture, L.,Rajnak, K.
, p. 315 - 332 (1984)
Preparation and spectroscopic characterization of two HoCl 3-galactitol complexes and one ErCl3-galactitol complex
Hua, Xiaohui,Pan, Qinghua,Yu, Lei,Xue, Junhui,Yang, Limin,Xu, Yizhuang,Zhao, Guozhong,Li, Weihong,Wang, Zheming,Wu, Jinguang,Liu, Kexin,Chen, Jia'Er
, p. 225 - 232 (2011)
The interactions between metal ions and hydroxyl groups of carbohydrates are important for their possible biological activities. Here two HoCl 3-galactitol complexes ([Ho(galac)(H2O) 3)]Cl3·0.5galac) (HoG(I)) and ([Ho 2(galac)(H2O)12)]Cl6·2H 2O) (HoG(II))) and one ErCl3-galactitol complex ([Er(galac)(H2O)3)]Cl3·0.5galac)(ErG)) were prepared and characterized. The possible structures of HoG(I) and ErG were deduced from FTIR, elemental analysis, ESI-MS, FIR, THz and TGA results. It is suggested that Ho3+ or Er3+ is 9-coordinated with six hydroxyl groups from two galactitol molecules and three water molecules, and another galactitol molecule is hydrogen-bonded in HoG(I) and ErG and the ratio of metal to ligand is 1:1.5. The structure of HoG(II) was determined by FTIR and X-ray diffraction analyses. The results demonstrate that lanthanide ions with galactitol may form two compounds in a system and different topological structures can be obtained.
Synthesis, characterization and thermal behaviour of solid-state tartrates of heavy trivalent lanthanides and yttrium(III)
Ambrozini, B.,Dametto, P. R.,Ionashiro, M.
, p. 867 - 871 (2011/10/31)
Solid state Ln2-L3 compounds, where Ln stands for heavy trivalent lanthanides (terbium to lutetium) and yttrium, and L is tartrate [(C4H4O6)-2] have been synthesized. Simultaneous thermogra
