Publication Details (including relevant citation information):
Journal of Cluster Science (2010), 21(3), 551-565. Chiarella, Gina M.; Melgarejo, Doris Y.; Prosvirin, Andrey V.; Dunbar, Kim R.; Fackler, John P., Jr.
The reaction of copper(I) chloride with Htbo (1,4,6-triazabicyclo[3.3.0]oct-4-ene) under reflux in THF with oxidn. by oxygen, produces a neutral cluster comprising two oxo-tetra-copper(II) units connected by six tbo- bridges three of them bind two and the other three bind four metals; each unit also contains three chlorine bridges and a Htbo terminal ligand. Two different x-ray crystal structures (1a, 1b) were detd. and the magnetic behavior was studied. The molar magnetic susceptibility measurements indicate strong exchange interactions within an oxo cluster with coupling consts. of J1 = -163 cm-1 and J2 = -1.1 cm-1, and a weak interaction across the guanidinate bridges of J3 = -5.2 cm-1 of the octa-CuII cluster.
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