Neeraj, S. ; Natarajan, Srinivasan ; Rao, C. N. R. (1999) A zinc phosphate possessing ladder-like layers made up of three-and four-membered rings and infinite Zn-O-Zn chains Chemistry of Materials, 11 (5). pp. 1390-1395. ISSN 0897-4756
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Official URL: http://pubs.acs.org/doi/abs/10.1021/cm9900094
Related URL: http://dx.doi.org/10.1021/cm9900094
A new open-framework zinc phosphate, [NH3(CH2)2NH(CH2)2NH3]2+2[Zn2PO4(HPO4)]-, possessing a layered architecture and consisting of alternating inorganic and organic layers, stabilized by multipoint hydrogen bonding has been synthesized hydrothermally. It has the following crystal data: monoclinic space group C2/c, a = 25.075(5) Å, b = 5.127(1) Å, c = 17.726(4) Å, β = 125.4(1)°, V = 1857.6(6) Å3, Z = 8, M = 748.3(1), Dcalc = 2.06 g cm-3, MoKα, and RF = 0.04. The structure is made up of ZnO4 and PO4 tetrahedra linked though vertexes. The connectivity between the two units creates a layered structure with steps, the layers consisting of three- and four-membered rings only. This is the first instance of such a network in open-framework zinc phosphates. The exclusive presence of three-membered ring chains creates steps in the layers as well as an infinite number of Zn-O-Zn one-dimensional chains. Hydrogen bond interactions between the inorganic layers give rise to pseudo 10-membered ring channels, in which the diprotonated diethyelenetriamine molecules reside. The unusual T atom (T being Zn or P) connectivity in this material suggests the possibility of synthesizing many such materials with novel connectivities and networks.
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|Deposited On:||11 Dec 2010 13:57|
|Last Modified:||10 Jun 2011 15:18|
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