Mandal, Sukhendu ; Green, Mark A. ; Natarajan, Srinivasan (2004) Synthesis of open-framework iron phosphates,[C5N2H14]2[FeIII2F2(HPO4)4]·2H2O and [C5N2H14][FeIII4(H2O)4F2(PO4)4], with one-and three-dimensional structures Journal of Solid State Chemistry, 177 (4-5). pp. 1117-1126. ISSN 0022-4596
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00224...
Related URL: http://dx.doi.org/10.1016/j.jssc.2003.10.019
Abstract
The hydrothermal syntheses and structures of two new open-framework iron phosphates, [C5N2H14]2[FeIII2F2(HPO4)4]·2H2O, I, and [C5N2H14][FeIII4(H2O) 4F2(PO4)4], II, are presented. While the structure of I consist of FeO4F2 octahedra and HPO4 terahedra linked to form one-dimensional structure, that of II consist of FeO4(H2O)2, FeO4(H2O)F, FeO4F2 and PO4 units connected to give rise to a three-dimensional structure. The structure of I resembles the naturally occurring mineral tancoite while II resembles the iron phosphate, ULM-12, [C6N2H14][Fe4(PO4)2F2(H2O)3]. Magnetic susceptibility studies indicate anti-ferromagnetic behavior in both the compounds with TN=200 and 175 K for I and II, respectively. Crystal data: I, monoclinic, space group=P21/n (no. 14). a=7.2261(6), b=16.5731(14), c=11.0847(10) Å, β=97.265(2)°, V=1316.8(2) Å3, Z=4, ρcalc=1.952 g cm-1, μ(MoKα)=1.446 mm-1, R1=0.0448 and wR2=0.1141 for 1882 data [I>2σ(I)]; for II, monoclinic, space group=P21/n (no. 14). a=9.9691(3), b=12.4013(3), c=17.3410(3) Å, β=103.762(1)°, V=2082.32(9) Å3, Z=4, ρcalc=2.576 g cm-1, μ(MoKα)=3.162 mm-1, R1=0.0510 and wR2=0.1064 for 2979 data [I>2σ(I)].
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Hydrothermal Synthesis; Iron Phosphates; Anti-ferromagnetic |
| ID Code: | 27716 |
| Deposited On: | 11 Dec 2010 08:23 |
| Last Modified: | 04 Mar 2011 09:59 |
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