Citation:
YE Xing-Pei, CAI Hong-Xin, WU Wei-Na, WANG Yuan. Synthesis, Crystal Structure and Fluorescent Property of a Lanthanum(Ⅲ) Complex Coordinated with Quinolinyloxy Acetamide Ligand[J]. Chinese Journal of Structural Chemistry,
2014, 33(7): 1057-1062.
Synthesis, Crystal Structure and Fluorescent Property of a Lanthanum(Ⅲ) Complex Coordinated with Quinolinyloxy Acetamide Ligand
摘要:
A novel lanthanum(Ⅲ) complex, [LaL2(NO3)3]·H2O (1) based on L (L=N-(naphthalene-1-yl)-2-(quinolin-8-yloxy)acetamide), was synthesized and characterized by X-ray diffraction. The crystal of 1 belongs to the monoclinic system, space group C2c with Mr=1017.69, a=25.1438(17), b=13.5950(9), c=18.2349(12) Å, β=132.4980(10)°, V=4595.8(5) Å3, Z=4, Dc=1.471 Mg/m3, F(000)=2056, μ=1.004 mm-1, R=0.0588 and wR=0.1402. The central La(Ⅲ) ion is coordinated to four oxygen atoms, two nitrogen atoms from two independent acetamide ligands and six oxygen atoms from three nitrate anions, possessing a distorted icosahedron coordination geometry. In the crystal of 1, intermolecular N-H…O hydrogen bonds linked the molecules into chains along the c axis. In solid state and CH3CN solution, complex 1 exhibits stronger fluorescent emission than the ligand L.
English
Synthesis, Crystal Structure and Fluorescent Property of a Lanthanum(Ⅲ) Complex Coordinated with Quinolinyloxy Acetamide Ligand
Abstract:
A novel lanthanum(Ⅲ) complex, [LaL2(NO3)3]·H2O (1) based on L (L=N-(naphthalene-1-yl)-2-(quinolin-8-yloxy)acetamide), was synthesized and characterized by X-ray diffraction. The crystal of 1 belongs to the monoclinic system, space group C2c with Mr=1017.69, a=25.1438(17), b=13.5950(9), c=18.2349(12) Å, β=132.4980(10)°, V=4595.8(5) Å3, Z=4, Dc=1.471 Mg/m3, F(000)=2056, μ=1.004 mm-1, R=0.0588 and wR=0.1402. The central La(Ⅲ) ion is coordinated to four oxygen atoms, two nitrogen atoms from two independent acetamide ligands and six oxygen atoms from three nitrate anions, possessing a distorted icosahedron coordination geometry. In the crystal of 1, intermolecular N-H…O hydrogen bonds linked the molecules into chains along the c axis. In solid state and CH3CN solution, complex 1 exhibits stronger fluorescent emission than the ligand L.
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Key words:
- lanthanum(Ⅲ) complex
- / acetamide ligand
- / crystal structure
- / fluorescent emission
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