配位錯合物[(Nd-μ3-Cl9)]∞合成與結構分析

Synthesis and Crystal Structure of [(Nd-μ3-Cl9)]∞

利用水熱合成反應，得到配位錯合物[(Nd-μ3-Cl9)]∞(1)，經X-Ray晶體繞射方法測定結果顯示，錯合物1屬單斜晶系(Monoclinic)，空間群為P2(下標 1/n')(no. 14)，a=6.2010(5) Å，b=3.8740(4) Å，c=12.5680(11) Å，β=93.91(0)°，V=301.21(5) Å3，Z=2，Dc=4.744 g/立方公分，S=1.316，λ(M0K(下標α))=0.71073，F(000)=376，R1=0.1239 & wR2=0.3972。晶體結構顯示錯合物含有氯的橋鍵(μ3-η^1)配位基，每個Nd(Ⅲ)配位九個氯離子，形成些為歪曲三帽三角菱柱結構，六個對稱氯配位基在三角菱柱頂點，而其餘三個氯離子則位在菱柱長方形外，Nd原子位於中心。由於晶格靜電吸引力(Cl1…Nd1)，此晶體自組裝成三維(3-D)無限延伸的立體結構。

The title complex [(Nd-μ3-Cl9)](subscript ∞) (1) has been synthesized via hydrothermal reaction and be characterized by X-ray diffraction. The crystal belongs to monoclinic, space group P 21/n' (no. 14), a=6.2010(5) Å, b=3.8740(4) Å, c=12.5680(11) Å, β=93.91(0)°, V=301.21(5) Å3, Z=2, Dc=4.744 g/cm^3, S=1.316, λ(M0Kα)=0.71073, F(000)=376, R1=0.1239 & wR2=0.3972. The crystal structure shows that Nd (Ⅲ) ion is coordinated with nine chloride atoms bridges (μ3-η 1), forming a distorted tricapped trigonal-prismatic geometry. The six symmetry-equivalent prismatic chloride ligands define the vertices of the trigonal prism. The three capping chloride ligands are positioned outside the rectangular faces of the prism. The Nd (Ⅲ) ion is in the center. The three-dimensional (3-D) crystal structure is stabilized by electrostatic interaction.