A Two-dimensional Lanthanide Coordination Framework with a New Amide-type Tripodal Ligand,2,2',2"-Nitrilotris{[(2'-benzylaminoformyl)phenoxy]ethyl}amine

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2004,（6）
• 页码范围: 508-511
• 页数: 4页
• 语种: 英文

摘要

The La(III) complex with a new amide-type tripodal ligand, 2,2',2"-nitrilotris{[(2'-benzylaminoformyl)-phenoxy]ethyl}amine (L), was synthesized and characterized by X-ray crystallographic analysis. Crystal data:C48H55.50LaN7O18.75, Mr=1169.40, monoclinic, space group, P21/n, a=1.0644(3) nm, b=2.3889(5) nm, c=2.1917(5) nm, β=90.65°, V=5.573(2) nm3, Z= 1, De= 1.394 g·cm-3, R1=0.0487, wR [1＞2σ(I)]=0.1266. The results reveal that each La(III) ion binds to 9 oxygen atoms, three of which belong to carbonyl groups from three tripodal ligands and six to three bidentate nitrate groups and a two-dimensional sheet of 4.82 networks is assembled by metal-ligand coordination interaction. L, a heptadentate compound, merely acts as a tridentate bridging spacer due to its steric hindrance and links the La(III) ions as three-connected nodes.