Oxalate-bridged heterometallic chains with monocationic dabco derivativesElectronic supplementary information (ESI) available: Additional structural figures, magnetic data, permittivity data, DFT calculation, and DSC data. CCDC 1496000-1496004 for 1, 2, 3, 4 (100 K), and 4 (130 K), respectively. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6dt02955h

A series of bimetallic oxalate-bridged one-dimensional chains with monocationic dabco derivatives, ({R-dabco}[M(solv) 2 ][Cr(ox) 3 ]· n (solv)) (dabco = 1,4-diazabicyclo[2.2.2]octane, H 2 ox = oxalate; R = H, M = Co ( 1 ); R = H, M = Zn ( 2 ); R = Bu, M = Co ( 3 ); R = Bu, M = Zn ( 4 )) were synthesized. All compounds have one-dimensional zig-zag chain structures with R-dabco cations located between chains. Cryomagnetic studies reveal that 1 and 3 showed intrachain ferromagnetic interactions between Co( ii ) and Cr( iii ) ions and metamagnetic behaviour due to interchain antiferromagnetic interactions. Permittivity measurements on compound 4 indicate specific paraelectronic relaxation behaviour originating from the rotational motion of the dabco alkyl substituent. A series of bimetallic oxalate-bridged one-dimensional chains with monocationic dabco derivatives were synthesized, and their metamagnetic behavior of ferromagnetic Cr-Co oxalate chain and a specific paraelectronic relaxation behavior were investigated.