2001
DOI: 10.1107/s0108270100020308
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trans-Dioxocyclam (1,4,8,11-tetraazacyclotetradecane-2,9-dione) dihydrate and its NiIIcomplex

Abstract: The crystal structures are reported of trans-dioxocyclam dihydrate, C(10)H(20)N(4)O(2).2H(2)O, a structural isomer of the well known cis-dioxocyclam, and of its novel Ni complex, (1,4,8,11-tetraazacyclotetradecane-2,9-dionato-kappa(4)N)nickel(II) dihydrate, [Ni(C(10)H(18)N(4)O(2))].2H(2)O, the first example of a transition metal complex of this ligand. Both molecules lie on crystallographic centres of inversion. The free ligand has two of its N atoms turned outwards from the ring and hydrogen bonded to water m… Show more

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Cited by 4 publications
(1 citation statement)
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“…The present study addresses perturbation of the stacking resulting from changes in the hydrogen-bonding network upon substitution of two of the amines by amides. The crystal structure of transdioxocyclam has been reported previously as the dihydrate (Hubin et al, 2001;Fre  mond et al, 2000).…”
Section: Commentmentioning
confidence: 99%
“…The present study addresses perturbation of the stacking resulting from changes in the hydrogen-bonding network upon substitution of two of the amines by amides. The crystal structure of transdioxocyclam has been reported previously as the dihydrate (Hubin et al, 2001;Fre  mond et al, 2000).…”
Section: Commentmentioning
confidence: 99%