Chemistry of Materials · 2002 · 63 citations · 11 references
Natural SciencesChemistryMaterials ScienceCrystal StructureInorganic ChemistryMagnetic MaterialsCoordination ChemistryCrystal ChemistryCrystal PlanesCrystal SystemsMagnetism Of Inorganic CompoundsTransition Metal ChemistryCoordination Compound MagnetismInterlayer BondingInterlayer ConnectivityMagnetic PropertiesMagnetic Properties Of Transition Metal ComplexesMagnetism Of Transition Metal ComplexesMolecular MagnetismTransition Metal Magnetism
Compounds [NH 3 (CH 2 ) 4 NH 3 ]Cu 3 (hedp) 2 ·2H 2 O ( 1 ) and [NH 3 (CH 2 ) 3 NH 3 ]Cu 3 (hedp) 2 ·3.5H 2 O ( 2 ), where hedp represents 1-hydroxyethylidenediphosphonate, exhibit two-dimensional structures closely related to each other. The anionic layers with composition {Cu 3 (hedp) 2 } n 2 n - contain four- and eight-membered rings assembled from vertex-sharing {CuO 4 } units and {CPO 3 } tetrahedra. The protonated diamines and lattice water fill the interlayer spaces. Crystal data for 2: space group P1̄, a = 8.0315(4), b = 11.3713(6), c = 13.3117(7) Å, α = 97.122(1), β = 103.187(1), γ = 108.668(1)°, V = 1095.5(1) Å 3, Z = 2. Magnetic properties of the two compounds have been investigated. Both show typical metamagnetic behaviors at low temperature. The critical field at which the antiferromagnetic ground-state switches to a ferrimagnetic state is ∼48 Oe for 1 and 185 Oe for 2 at about 2 K.
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