When does a Nitrogen attached to a {\lambda^3}-Phosphorus assume a Pyramidal Geometry? Crystal Structures of Group 6 Metal Carbonyl Complexes of Isomeric Forms of $\lambda^3$- Cyclotriphosphazanes

Murugavel, Ramaswamy and Krishnamurthy, Setharampattu S and Nethaji, Munirathinam (1993) When does a Nitrogen attached to a {\lambda^3}-Phosphorus assume a Pyramidal Geometry? Crystal Structures of Group 6 Metal Carbonyl Complexes of Isomeric Forms of $\lambda^3$- Cyclotriphosphazanes. In: Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (24). pp. 3635-3639.

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Abstract

The reaction of $[Mo(CO)_4(nbd)]$ (nbd = norbornadiene) with trans-$[EtNP(OC_6H_3Me_2-2,6)]_3$ $(L^1)$ or cis-$[EtNP(OCH_2CF_3)]_3$ $(L^2)$ yields the mono- and di-nuclear molybdenum(o) complexes $[Mo(CO)_4(L^1)]$ 1 and $[\{Mo(CO)_4(\mu-L^2)\}_2$ 2, respectively. They represent the first organometallic transition-metal derivatives of $\lambda^3$-cyclotriphosphazanes and have been characterised by elemental analysis and I R and NMR spectroscopy and their structures confirmed by X-ray crystallography. The different co-ordination behaviour of the cis and trans isomeric forms of this type of ligand is revealed. A pyramidal geometry observed around one of the nitrogen atoms of the $P_3N_3$ ring in complex 1 is unprecedented among $\lambda^3$- phosphazanes.

Item Type: Journal Article Copyright of this article belongs to Royal Society of Chemistry. Division of Chemical Sciences > Inorganic & Physical Chemistry 01 Jul 2008 19 Sep 2010 04:46 http://eprints.iisc.ernet.in/id/eprint/14630