Giannis S. Papaefstathiou, A. Escuer, R. Vicente
Nov 22, 2001
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Chemical communications
Abstract
The reaction of di-2-pyridyl ketone, (2-py)2CO, with Ni(O2CMe)(2).4H2O yields the cage [Ni9(OH)2(O2CMe)8((2-py)2CO2)4], which reacts further with N3- ions to give the structurally similar cluster [Ni9(N3)2(O2CMe)8((2-py)2CO2)4] containing extremely rare eta 1,mu 4-N3- groups; magnetic studies reveal that the spin ground state of the latter is nine times the ground state of the former.