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A two‐dimensional lanthanide coordination framework with a new amide‐type tripodal ligand,2,2′,2″‐nitrilotris{[(2′‐benzylaminoformyl)phenoxy]ethyl}amine
Author(s) -
Fan Jun,
Zhang WeiGuang,
Tan MinYu,
Tang Yu,
Liu WeiSheng,
Tang Ning,
Yu KaiBei
Publication year - 2004
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20040220603
Subject(s) - chemistry , tripodal ligand , amide , monoclinic crystal system , amine gas treating , steric effects , crystallography , ligand (biochemistry) , lanthanide , stereochemistry , denticity , crystal structure , ion , receptor , organic chemistry , biochemistry
The La(III) complex with a new amide‐type tripodal ligand, 2 ,2′.2″‐nitrilotris{[(2′‐benzylaminofomyl)‐phenoxylethyl)amine (L), was synthesized and characterized by X‐ray crystallographic analysis. Crystal data: C 48 H 55.50 LaN 7 O 18.75 , M r = 1169.40, monoclinic. space group, P 2 1 /n , a= 1.0644(3) nm. b=2.3889(5) nm, c= 2.1917(5) nm, β=90.65°, V=5.573(2) nm 3 , Z=1, D c =1.394 g°cm −3 , R 1 =0.0487, w R [1>2s̀(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 4.8 2 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.