477332-53-9Relevant academic research and scientific papers
Nitride formation by thermolysis of a kinetically stable niobium dinitrogen complex
Fryzuk, Michael D.,Kozak, Christopher M.,Bowdridge, Michael R.,Patrick, Brian O.,Rettig, Steven J.
, p. 8389 - 8397 (2002)
The reduction of [P2N2]NbCl (where [P2N2] = PhP(CH2SiMe2NSiMe2 CH2)2PPh) with KC8 under a dinitrogen atmosphere generates the paramagnetic dinuclear dinitrogen complex ([P2N2]Nb)2(μ-N2) (2). Complex 2 has been characterized crystallographically and by EPR spectroscopy. Variable-temperature magnetic susceptibility measurements indicate that 2 displays antiferromagnetic coupling between two Nb(IV) (d1) centers. A density functional theory calculation on the model complex [(PH3)2(NH2)2Nb]2 (μ-N2) was performed. Thermolysis of ([P2N2]Nb)2(μ-N2) in toluene generates the paramagnetic bridging nitride species where one N atom of the dinitrogen ligand inserts into the macrocycle backbone to form [P2N2]- Nb(μ-N)Nb[PN3] (3) (where [PN3] = PhPMe(CHSiMe2NSiMe2CH2P(Ph) CH2SiMe2NSiMe2N)). Complex 3 has been characterized in the solid state as well as by variable-temperature magnetic susceptibility measurements. The reaction of ([P2N2]Nb)2(μ-N2) with phenylacetylene displaces the dinitrogen fragment to generate a paramagnetic η2-alkyne complex, [P2N2]Nb(η2-HCCPh) (4).
Macrocyclic complexes of niobium(III): Synthesis, structure, and magnetic behavior of mononuclear and dinuclear species that incorporate the [P2N2] system
Fryzuk, Michael D.,Kozak, Christopher M.,Bowdridge, Michael R.,Jin, Weichang,Tung, Dean,Patrick, Brian O.,Rettig, Steven J.
, p. 3752 - 3761 (2008/10/08)
The coordination chemistry of the two mixed donor macrocyclic ligands R[P2N2] (where R[P2N2] = RP(CH2SiMe2NSiMe2CH2)2PR, R = cyclohexy
