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Cyclotriphosphazene Hydrazides as Efficient Multisite Coordination Ligands. η<sup>3</sup>-<i>f</i><i>ac</i>-<i>n</i><i>on-geminal</i>-N<sub>3</sub> Coordination of <i>s</i><i>piro</i>-N<sub>3</sub>P<sub>3</sub>[O<sub>2</sub>C<sub>12</sub>H<sub>8</sub>][N(Me)NH<sub>2</sub>]<sub>4</sub> (L) in L<sub>2</sub>CoCl<sub>3</sub> and L<sub>2</sub>M(NO<sub>3</sub>)<sub>2</sub> (M = Ni, Zn, Cd)
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Citations
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References
2003
Year
Inorganic CompoundInorganic ChemistryBiochemistryNatural SciencesCoordination ComplexCoordination GeometryMolecular ComplexMultisite Coordination LigandChemistryRing Nitrogen AtomInorganic SynthesisCyclotriphosphazene Hydrazides
The cyclophosphazene tetrahydrazide spiro-N(3)P(3)[O(2)C(12)H(8)][N(Me)NH(2)](4) (L) functions as a multisite coordination ligand and affords L(2)CoCl(3).2CH(3)OH (4), L(2)Ni(NO(3))(2).2CHCl(3).2.5H(2)O (5), L(2)Zn(NO(3))(2).2CH(3)CN.2H(2)O (6), and L(2)Cd(NO(3))(2) (7). Each of the cyclophosphazene ligands that is involved in coordination to the metal functions as a non-geminal-N(3) donor coordinating through one ring nitrogen atom and two non-geminal-NH(2) nitrogen atoms. The coordination geometry around the metal ion in 4-6 is approximately octahedral while it is severely distorted in the case of 7.
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