Tetra-kis(1,3,4,6,7,8-hexa-hydro-2H-pyrimido[1,2-a]pyrimidin-9-ido- κ2 N 1,N 9)niobium(V) hexa-fluorido-phosphate

F. Albert Cotton; Carlos A. Murillo; Pavel V. Poplaukhin; Nattamai Bhuvanesh; Edward R.T. Tiekink

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Tetra-kis(1,3,4,6,7,8-hexa-hydro-2H-pyrimido[1,2-a]pyrimidin-9-ido- κ2 N 1,N 9)niobium(V) hexa-fluorido-phosphate

Cotton F
Murillo C
Poplaukhin P
et al.

Acta Crystallographica Section E: Structure Reports Online (2008) 64(9)

DOI: 10.1107/S1600536808026627

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Abstract

The title complex, [Nb(C7H12N3)4]PF6, features chelating hpp anions (hpp is 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrim-idine) that define a distorted dodeca-hedral coordination geometry based on an N8 donor set. The Nb atom is situated on a site of symmetry , and the PF6 - anion has crystallographic fourfold symmetry.

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Cotton, F. A., Murillo, C. A., Poplaukhin, P. V., Bhuvanesh, N., & Tiekink, E. R. T. (2008). Tetra-kis(1,3,4,6,7,8-hexa-hydro-2H-pyrimido[1,2-a]pyrimidin-9-ido- κ2 N 1,N 9)niobium(V) hexa-fluorido-phosphate. Acta Crystallographica Section E: Structure Reports Online, 64(9). https://doi.org/10.1107/S1600536808026627

Tetra-kis(1,3,4,6,7,8-hexa-hydro-2H-pyrimido[1,2-a]pyrimidin-9-ido- κ2 N 1,N 9)niobium(V) hexa-fluorido-phosphate

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