Kanizaj, Lidija; Molcanov, Kresimir; Toric, Filip; Pajic, Damir; Loncaric, Ivor; Santic, Ana; Juric, Marijana published the artcile< Ladder-like [CrCu] coordination polymers containing unique bridging modes of [Cr(C2O4)3]3- and Cr2O72->, Application In Synthesis of 366-18-7, the main research area is crystal structure copper oxalate chromium dichromate diimine coordination polymer; copper oxalate chromium dichromate diimine polymer preparation antiferromagnetic.
Three heterometallic 1-dimensional (1D) coordination polymers {A[CrCu2(bpy)2(C2O4)4]·H2O}n [A = K+ 1 and NH4+ 2; bpy = 2,2′-bipyridine] and [(Cr2O7)Cu2(C2O4)(phen)2]n (3; phen = 1,10-phenanthroline) with uncommon topol. were synthesized using a building block approach and characterized by single-crystal x-ray diffraction, IR and impedance spectroscopies, magnetization measurements, and DFT calculations Due to the partial decomposition of the building block [Cr(C2O4)3]3-, all three compounds contain oxalate-bridged [Cu2(L)2(μ-C2O4)]2+ units [L = bpy 1 and 2 and phen 3]. In compounds 1 and 2, these cations are mutually connected through oxalate groups from [Cr(C2O4)3]3-, thus forming ladder-like topologies. Unusually, three different bridging modes of the oxalate ligand are observed in these chains. In compound 3 Cu(II) ions from cationic units are bridged through the O atoms of Cr2O72- anions in a novel ladder-like mode. Very strong antiferromagnetic coupling observed in all three compounds, determined from the magnetization measurements and confirmed by DFT calculations (J = -343, -371 and -340 cm-1 for 1-3, resp.), appears between two Cu(II) ions interacting through the oxalate bridge.
Dalton Transactions published new progress about Antiferromagnetic exchange. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, Application In Synthesis of 366-18-7.