title: Self-assembly of metallomacrocycles with dipyrazole ligands and anion sensing of [Pd4Fe2] macrocycle with ferrocene-based dipyrazole ligand.
abstract: By employing dipalladium corners [(bpy)(2)Pd(2)(NO(3))(2)](NO(3))(2) or [(phen)(2)Pd(2)(NO(3))(2)](NO(3))(2) (where bpy = 2,2'-bipyridine and phen = 1,10-phenanthroline) to bridge ferrocene-based dipyrazole ligand (L(1)) and m-phenylene-based dipyrazole ligands (L(2-3)) in aqueous solution, a series of positively-charged [M(4)L(2)](4+) metallomacrocycles were obtained. Their structures were characterized by (1)H NMR, electrospray ionization mass spectrometry (ESI-MS), elemental analysis, and single crystal X-ray diffraction analysis for 1·4NO(3) ({[(bpy)Pd](4)L(1)(2)}(NO(3))(4)) and 4·4NO(3) ({[(phen)Pd](4)L(2)(2)}(NO(3))(4)). In their single crystal structures, NO(3)(-) anions are located at the dipalladium corners by C-H...O hydrogen bonds. Importantly, the anion-sensing properties of ferrocene functionalized [Pd(4)Fe(2)] hetero-metallomacrocycle 1 were investigated in acetonitrile by SWV, CV and NMR analysis, showing promise for Br(-) sensing.
authors.affiliation: Laboratory for Self-Assembly Chemistry, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.
authors.forename: Liao-Yuan
authors.initials: LY
authors.lastname: Yao
authors.forename: Zheng-Su
authors.initials: ZS
authors.lastname: Yu
authors.forename: Lin
authors.initials: L
authors.lastname: Qin
authors.forename: Yi-Zhi
authors.initials: YZ
authors.lastname: Li
authors.forename: Yu
authors.initials: Y
authors.lastname: Qin
authors.forename: Shu-Yan
authors.initials: SY
authors.lastname: Yu
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry; D018360:Crystallography, X-Ray; D005296:Ferrous Compounds / Q000737:chemistry*; D006860:Hydrogen Bonding; D008024:Ligands; D047028:Macrocyclic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D000075163:Metallocenes; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry; D010618:Phenanthrolines / Q000737:chemistry; D011720:Pyrazoles / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D005296:Ferrous Compounds; D008024:Ligands; D047028:Macrocyclic Compounds; D000075163:Metallocenes; D009942:Organometallic Compounds; D010618:Phenanthrolines; D011720:Pyrazoles; D014867:Water; C031280:pyrazole; D015082:2,2'-Dipyridyl; D010165:Palladium; C004998:ferrocene; C025205:1,10-phenanthroline