ISSN:
1573-4854
Keywords:
phosphate
;
iron
;
mixed-valence
;
template
;
structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract A novel iron phosphate templated with ethylenediammonium cation, [H3N(CH2)2NH3]2 Fe4 O(PO4)4ċH2O, has been synthesized hydrothermally and characterized by single-crystal X-ray diffraction, thermo-gravimetric analysis, magnetic susceptibility and Mossbauer spectroscopy. The compound crystallizes in the mono-clinic space group C2 with a= 30.3801(5),b= 10.1204(5),c= 10.0977(5) Å,β = 107.712(1)°, V = 2957.5(4) Å3 and Z = 6. The structure contains 5 and 6-coordinated Fe atoms bridged by μ4-oxygen and PO4 groups to form two types of mixed-valence Fe4P4 cubane-like clusters, which are connected via Fe- O- P bonds to give rise to intersecting channels that house the ethylenediammonium cations and water molecules. Room-temperature Mossbauer data confirm the presence of FeII and FeIII.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1009605723397
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