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Heterometallic yellow compound Ba3[Fe(C2O4)3]2(H2O)12 (1) with mononuclear anion [Fe(C2O4)33−] can be transformed to heterometallic red compound Ba4.5[Fe4O(OH)3(C2O4)8](H2O)19 (2) with OH/O bridged tetranuclear anion [Fe4O(OH)3(C2O4)89−] in the mother liquor. Ba2+ and Fe3+ form three-dimensional networks thorough oxalate anion and H2O molecules in 1 and 2. 1 is a paramagnet and a strong antiferromagnetic...
A new coordination compound 1 derived from 1,4-bis(nitronyl nitroxide)benzene and copper(II)hexafluoroacetylacetonate [Cu(hfac) 2 ] was prepared and characterized. It crystallizes in the monoclinic space group P2 1 /n with a=13.134(3) Å, b=12.040(2) Å, c=17.520(4) Å, β=104.02(3) o , V=2688.0(10) Å 3 , Z=2. Its magnetic property was investigated with ESR and SQUID and...
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