title: Oxalate-bridged heterometallic chains with monocationic dabco derivatives.
abstract: 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, H2ox = 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.
authors.affiliation: Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan. oshio@chem.tsukuba.ac.jp.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Sakurai
authors.affiliation: Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan. oshio@chem.tsukuba.ac.jp.
authors.forename: Ryo
authors.initials: R
authors.lastname: Saiki
authors.affiliation: Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan. oshio@chem.tsukuba.ac.jp.
authors.forename: Rong Jia
authors.initials: RJ
authors.lastname: Wei
authors.affiliation: School of Chemistry, University Park Campus, University of Nottingham, Nottingham, NG7 2RD, UK.
authors.forename: Graham N
authors.initials: GN
authors.lastname: Newton
authors.affiliation: Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan. oshio@chem.tsukuba.ac.jp.
authors.forename: Takuya
authors.initials: T
authors.lastname: Shiga
authors.affiliation: Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan. oshio@chem.tsukuba.ac.jp.
authors.forename: Hiroki
authors.identifier: http://orcid.org/0000-0002-4682-4705
authors.initials: H
authors.lastname: Oshio