title: Magnetic behaviors of heterospin chains consisting of cobalt(II) complexes and dipyridylcarbenes.
abstract: The 1:1 mixture of Co(Brhfpip)(2) and D1py(2) gave isomeric diazocobalt complexes, 1 and 2, formulated by [Co(Brhfpip)(2)(D1py(2))](n). Complexes 1 and 2 have zigzag and linear chain structures by the cis and trans coordination of pyridine units in D1py(2), respectively. After irradiation of microcrystalline samples, the generated carbene interacted with the cobalt ion to form ferromagnetic chains, 1c and 2c. Those isomeric chains exhibited slow magnetic relaxation with U(eff) = 93 and 87 K and H(c) = 20 and 13 kOe at 1.9 K for 1c and 2c, respectively.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan.
authors.forename: Satoru
authors.initials: S
authors.lastname: Karasawa
authors.forename: Noboru
authors.initials: N
authors.lastname: Koga
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008280:Magnetics; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D009942:Organometallic Compounds; C030011:carbene; D003035:Cobalt; D015082:2,2'-Dipyridyl; D008697:Methane