Tetra­kis(1,3,4,6,7,8-hexa­hydro-2H-pyrimido[1,2-a]pyrimidin-9-ido-κ2N1,N9)niobium(V) hexa­fluorido­phosphate

Cotton, F.A.; Murillo, C.A.; Poplaukhin, P.V.; Bhuvanesh, N.; Tiekink, E.R.T.

doi:10.1107/S1600536808026627

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 1 Molecular structure of the cation in (I) showing the crystallographic numbering scheme. Displacement ellipsoids are shown at the 35% probability level. The Nb atom is located on a site of symmetry $[\overline{4}]$ .

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 64| Part 9| August 2008| Page m1197

doi:10.1107/S1600536808026627

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