TY - JOUR
T1 - Mixed inorganic-organic anion frameworks: synthesis and characterisation of [Mn4(PO4)2(C2O4)(H2O)2] and [H3N(CH2)3NH3][Mn2(HPO4)2(C2O4)(H2O)2]
AU - Lethbridge, ZAD
AU - Hillier, AD
AU - Cywinski, R
AU - Lightfoot, Philip
PY - 2000
Y1 - 2000
N2 - Two new three-dimensional manganese phosphate oxalate frameworks have been synthesized and their structures determined by single crystal X-ray diffraction. The compound [Mn-4(PO4)(2)(C2O4)(H2O)(2)] 1 is monoclinic, space group P2(1)/c, a=10.263(3), b=6.526(2), c=10.082(3) Angstrom and beta=116.84(2)degrees. MnO5 and MnO6 polyhedra share edges to form tetramers, which are further linked by PO4 tetrahedra to form layers in the bc plane. The layer, which contains an extended array of direct Mn-O-Mn linkages, is in turn linked to neighbouring layers by pillaring bisbidentate oxalate groups. Magnetisation measurements indicate antiferromagnetic interactions, and suggest that the material may be a two dimensional antiferromagnet. Thermogravimetric analysis shows the structure to be stable up to 240 degrees C. The compound [H3N(CH2)(3)NH3][Mn-2(HPO4)(2)(C2O4)(H2O)(2)] 2 is monoclinic, space group P2(1)/n, a=5.474(2), b=15.737(2), c=9.056(2) Angstrom, beta=93.47(3)degrees, and includes a disordered 1,3-diaminopropane dication in channels parallel to the a direction. In contrast to 1, no direct Mn-O-Mn linkages occur.
AB - Two new three-dimensional manganese phosphate oxalate frameworks have been synthesized and their structures determined by single crystal X-ray diffraction. The compound [Mn-4(PO4)(2)(C2O4)(H2O)(2)] 1 is monoclinic, space group P2(1)/c, a=10.263(3), b=6.526(2), c=10.082(3) Angstrom and beta=116.84(2)degrees. MnO5 and MnO6 polyhedra share edges to form tetramers, which are further linked by PO4 tetrahedra to form layers in the bc plane. The layer, which contains an extended array of direct Mn-O-Mn linkages, is in turn linked to neighbouring layers by pillaring bisbidentate oxalate groups. Magnetisation measurements indicate antiferromagnetic interactions, and suggest that the material may be a two dimensional antiferromagnet. Thermogravimetric analysis shows the structure to be stable up to 240 degrees C. The compound [H3N(CH2)(3)NH3][Mn-2(HPO4)(2)(C2O4)(H2O)(2)] 2 is monoclinic, space group P2(1)/n, a=5.474(2), b=15.737(2), c=9.056(2) Angstrom, beta=93.47(3)degrees, and includes a disordered 1,3-diaminopropane dication in channels parallel to the a direction. In contrast to 1, no direct Mn-O-Mn linkages occur.
KW - CRYSTAL-STRUCTURE
KW - COORDINATION FRAMEWORKS
KW - HYDROTHERMAL SYNTHESIS
KW - HYBRID MATERIALS
KW - IRON PHOSPHATES
KW - OXALATE
KW - PHOSPHATOOXALATE
UR - http://www.scopus.com/inward/record.url?scp=0001979307&partnerID=8YFLogxK
U2 - 10.1039/B000449I
DO - 10.1039/B000449I
M3 - Article
SN - 0300-9246
SP - 1595
EP - 1599
JO - Journal of the Chemical Society, Dalton Transactions
JF - Journal of the Chemical Society, Dalton Transactions
IS - 10
ER -