Crystal structure of N-(oxabutyl-2-ene acid)-2,3-benzo-10-aza-1,4,7,13-tetraoxacyclopentadeca-2-ene (L) and characterization of Ln(2)L(3)(SCN)(3)center dot 2H(2)O (Ln = La, Eu, Dy) and Eu2L3(NO3)(3)center dot 2H(2)O

摘要

The structure of N-(oxabutyl-2-ene acid)-2,3-benzo-10-aza-1,4,7,13-tetraoxacyclopentadeca-2-ene (L) was determined by single crystal X-ray diffraction. The crystal is triclinic, space group P1 with cell dimensions of a = 0.80821(13) nm, b = 1.08777(13) nm, c = 1.09263(13) nm, alpha = 113.045(50)degrees, beta =95.428(11)degrees, gamma = 91.162(12)degrees, V= 0.8782(2) nm(3), Z= 2, mu,(MoK alpha) = 0.107 nm(-1), D-x = 1.382 g cm(-3). The ligand L has an intramolecular hydrogen bond [O(7)-(HO)-O-...(5)] resulting in the formation of a seven-membered ring. The isolation and characterization of Ln(2)L(3)(SCN)(3).2H(2)O (Ln = La, Eu, Dy) and Eu2L3(NO3)(3).2H(2)O are reported. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 14]