PREPARATION, STRUCTURE, AND MAGNETIC-PROPERTIES OF COPPER(II) PHOSPHONATES - BETA-CU-II(CH3PO3), AN ORIGINAL 3-DIMENSIONAL STRUCTURE WITH ACHANNEL-TYPE ARRANGEMENT
J. Lebideau et al., PREPARATION, STRUCTURE, AND MAGNETIC-PROPERTIES OF COPPER(II) PHOSPHONATES - BETA-CU-II(CH3PO3), AN ORIGINAL 3-DIMENSIONAL STRUCTURE WITH ACHANNEL-TYPE ARRANGEMENT, Inorganic chemistry, 33(22), 1994, pp. 4885-4890
Various copper(II) phosphonates are obtained, according to the method
of preparation: Cu(RPO(3)).H2O, alpha-Cu(RPO(3)) (R = CH3, C2H5,C6H5),
beta-Cu(CH3PO3), and Cu3O(CH3PO3)2.2H(2)O. beta-Cu(CH3PO3), a = b = 1
6.343(6) Angstrom, c = 7.092(4) Angstrom, Z = 18, R = 0.021, and R(w)
= 0.025, is rhombohedral (R (3) over bar, No. 148) and has an original
channel-type arrangement. Cu3O(CH3PO3)(2).2H(2)O crystallizes in the
monoclinic P2(1)/m (No. 11) space group with a = 7.125(4) Angstrom, b
= 6.944(4) Angstrom c = 11.337(7) Angstrom, beta = 95.33(4)degrees, Z
= 2, R = 0.055, and R(w) = 0.061. The evolution of the anhydrous alpha
-Cu(RPO(3)) compounds, in water, in an autoclave at 200 degrees C, dep
ending on the nature of the R radical, is described. Magnetic suscepti
bility data for all these copper phosphonates are also reported.