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catena-Poly[[(1,10-phenanthroline-κ2N,N′)lead(II)]-μ-azido-κ2N1:N3-μ-nitrito-κ3O,O′:O′-[(1,10-phenanthroline-κ2N,N′)lead(II)]-di-μ-azido-κ4N1:N1]

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Author(s): Gholamhossein Mohammadnezhad | Ali Reza Ghanbarpour | Mostafa M. Amini | Seik Weng Ng

Journal: Acta Crystallographica Section E
ISSN 1600-5368

Volume: 66;
Issue: 7;
Start page: m821;
Date: 2010;
Original page

ABSTRACT
The title coordination polymer, [Pb2(N3)3(NO2)(C12H8N2)2]n, has as the repeat unit a centrosymmetric dinuclear molecule having azide and nitrite groups that bridge adjacent heterocycle-coordinated metal centers. One of the azide group uses its terminal ends to bridge whereas the nitrite group chelates to one metal atom and uses one of its O atoms to bridge. The azide and nitrite groups are disordered with respect to each other in a 1:1 ratio. Adjacent dinuclear molecules are further bridged by the other two azide groups, generating a linear chain motif parallel to [010]. Half of the Pb atoms show a Ψ-dodecahedral coordination and the other half show a Ψ-pentagonal-bipyramidal coordination.

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