Neutral Praseodymium(III) Complexes with Tetraselenidoantimonate Ligand: Coligand Influence of Mixed Polyamines on the Coordination Mode of [SbSe₄]^3- Anion

作者：Zhao, Jing; Tang, Wei-wei; Liang, Jing-jing; Zhang, Yong; Jia, Ding-xian^*

来源：Journal of Chemical Crystallography, 2012, 42(3): 187-191.

DOI：10.1007/s10870-011-0222-4

• Solvothermal synthesis
• Praseodymium complex
• Tetraselenidoantimonate ligand
• Coordination mode
• X-ray structure determination

Mix-coordinated praseodymium(III) complexes concerning the [SbSe4](3-) inorganic ligand, [Pr(en)(2)(dien) (eta(2)-SbSe4)] (1) and [Pr(en)(trien)(mu-eta(1),eta(2)-SbSe4)](n) (2) (en = ethylenediamine, dien = diethylenetriamine, trien = triethylenetetramine), were prepared by solvothermal reactions of Pr2O3, Sb and Se in en + dien and en + trien mixed solvents, respectively. They crystallize in the monoclinic space group P2(1)/n but with different molecular structures.Crystallographic data for 1: a = 8.610(2), b = 27.722(7), c = 9.294(2) angstrom, beta = 108.987(3)degrees, V = 2097.7(9) angstrom(3), Z = 4. For 2: a = 14.2987(17), b = 9.0176(9), c = 15.4357 (18) angstrom, beta = 100.708(3)degrees, V = 1955.6(4) angstrom(3), Z = 4. The [SbSe4](3-) anion coordinates to the Pr3+ ion in [Pr(en)(2)(dien)](3+) as a eta(2)-SbSe4 chelating ligand, yielding complex 1. It acts as a mu-eta(1),eta(2)-SbSe4 bridging ligand to connect the [Pr(en)(trien)](3+) ions into the polymer 2. The coordination difference between 1 and 2 is attributed to the coligands of mixed polyamines.

• 单位
  苏州大学