A new dicopper(II) complex with macrocyclic hexaaza bearing hydroxyethyl pendants

Li, SA Li, DF Duan, CY Xia, J Yang, DX Tang, WX

Sa. Li et al., A new dicopper(II) complex with macrocyclic hexaaza bearing hydroxyethyl pendants, INORG CH C, 4(11), 2001, pp. 651-655

14

INGLESE

Article

Inorganic & Nuclear Chemistry

INORGANIC CHEMISTRY COMMUNICATIONS

1387-7003 → ACNP

4

11

2001

651 - 655

ISI

1387-7003(200111)4:11<651:ANDCWM>2.0.ZU;2-N

A new dicopper(II) complex with 3.6,9.16.19,22-hexaaza-6.19-bis(2-hydroxyet hyl)-tricyclo[22,2,2,2(11.14)]triaconta-1,11,13,24,27, 29-hexaene(L), was s ynthesized and characterized. The crystal structure of [Cu2L(N-3)(2)](ClO4) (2) (.) 2H(2)O has shown that both Cu2+ ions are in penta-coordination envi ronment with distorted trigonal bipyramid consisting of three N atoms from diethylenetriamine moieties. one N atom from azide and one O atom from hydr oxyethyl pendant, and the separation of Cu...Cu is 8.11 Angstrom. The two a romatic rings are close to each other, the shortest distance being 3.71 Ang strom for C11...C21, and the benzene ring planes from a dihedral angle of 7 0.9 degrees in molecule. ES-MS spectra showed that the main species, [CU2(L -H)N-3](2+) and [Cu-2(L-2H)](2+), were formed by deprotonation of the hydro xyethyl pendants and releasing azides from the Cu(II) complex stepwise. (C) 2001 Elsevier Science B.V. All rights reserved.