title: Syntheses, crystal structures, weak interaction, magnetic and photoluminescent properties of two new organic-inorganic molecular solids with disubstituted benzyl triphenylphosphinium and tetra(isothiocyanate)cobalt(II) anion.
abstract: Two new organic-inorganic molecular solids of tetra(isothiocyanate)cobalt(II) dianion and disubstituted benzyl triphenylphosphinium, [2Cl4FBzTPP]2[Co(NCS)4] (1) and [2Cl4ClBzTPP]2[Co(NCS)4] (2) ([2Cl4FBzTPP](+)=1-(2'-chloro-4'-fluorobenzyltriphenylphosphonium) and [2Cl4ClBzTPP](+)=1-(2',4'-dichlorobenzyltriphenylphosphonium), were synthesized and characterized by elemental analysis, FT-IR, UV-Vis spectra, ESI-MS and single crystal X-ray diffraction method. Compounds 1 and 2 crystallize in the monoclinic Pc and triclinic P-1, respectively. The Co(II) ion of the [Co(NCS)4](2-) anion shows a distorted tetrahedral coordination geometry. The [2Cl4FBzTPP](+) cations containing P(2) atoms in 1 form a column by the Cl⋯π interactions, while the [2Cl4ClBzTPP](+) cations in 2 form two columns by the C-H⋯π and π⋯π interactions. The anion and the cation are linked by C-H⋯S hydrogen bonds and Cl⋯S interactions. Magnetic susceptibility measurement in the temperature range 2-300K shows that both 1 and 2 exhibit a weak antiferromagnetic exchange interaction as the temperature falls, and ultraviolet fluorescence emission in the solid state at room temperature.
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China.
authors.forename: Tian
authors.initials: T
authors.lastname: Hu
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China.
authors.forename: Bing-Wu
authors.initials: BW
authors.lastname: Wang
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China.
authors.forename: Wan-Qi
authors.initials: WQ
authors.lastname: Zheng
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China.
authors.forename: Xiao-Geng
authors.initials: XG
authors.lastname: Zheng
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China.
authors.forename: Qian-Ting
authors.initials: QT
authors.lastname: Liu
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China.
authors.forename: Shu-Hua
authors.initials: SH
authors.lastname: Ou
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China.
authors.forename: Ling-Zhi
authors.initials: LZ
authors.lastname: Zhan
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China. Electronic address: scauchem534@126.com.
authors.forename: Jia-Rong
authors.initials: JR
authors.lastname: Zhou
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China.
authors.forename: Le-Min
authors.initials: LM
authors.lastname: Yang
authors.affiliation: Department of Applied Chemistry, Institute of Biomaterial, College of Materials and Energy, South China Agricultural University, 510642 Guangzhou, PR China. Electronic address: niclchem@scau.edu.cn.
authors.forename: Chun-Lin
authors.initials: CL
authors.lastname: Ni
keywords: Crystal structures; Disubstituted benzyl triphenylphosphinium cation; Luminescent properties; Magnetic properties; Tetra(isothiocyanate)cobalt(II) anion; Weak interactions