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Updated: Jul 7, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Cyclic, trinuclear PdII complex of cytidine with pronounced double cone structure
Wei-Zheng Shen1, Bernhard Lippert
1Fachbereich Chemie, Universität Dortmund, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany.
Abstract:
Reaction of PdII(tmeda) (tmeda=N,N,N',N'-tetramethylethylenediamine) with the RNA nucleoside cytidine (Cytd) yields a cyclic nucleoside complex containing three metal entities and three cytidine anions, with metal cross-links involving N(3) and N(4)H(-) sites. [{Pd(Cytd(-)-N3,N4)(tmeda)}3](ClO4)3.6H2O has a characteristic double cone structure with the methyl groups of the tmeda ligands representing the lower rim and the ribose moieties forming the upper rim. The Pd3 triangle is equilateral (5.193(1)A). In the solid state structure, one of the ClO(4)(-) counter ions links the lower and the upper rims of adjacent cones, thereby leading to a 1D chain. No host-guest chemistry has been detected with a series of N-heterocyclic ligands in water.
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