title: Structure modulation of manganese coordination polymers consisting of 1,4-naphthalene dicarboxylate and 1,10-phenanthroline.
abstract: Three new manganese coordination polymers, {[Mn2(1,4-NDC)2(phen)2](H2O)}n (1), [Mn2(1,4-NDC)2(phen)(H2O)]n (2) and {[Mn4(1,4-NDC)4(phen)4](DMF)2}n (3) (1,4-H2NDC = 1,4-naphthalene dicarboxylic acid; phen = 1,10-phenanthroline; DMF = N,N-dimethylformamide), have been synthesized solvo/hydrothermally. 1,4-NDC(2-) ligands adopt different coordination modes under different solvents and concentrations which promotes different crystal structure formation. X-ray crystal structural data reveal that compounds 1, 2 and 3 crystallize in monoclinic space groups C2/c, P21/c and C2/c, respectively. Compound 1 has Mn2 dimers connected by 1,4-NDC(2-) linkers, packing into a 2D structure in a grid pattern. Compound 2 has a three-dimensional (3D) structure which is constructed by Mn2 dimers and 1,4-NDC(2-) linkers. Each MnO4N2 node of compound 3 is linked to another by 1,4-NDC(2-) ligands to form a two-dimensional (2D) structure. Variable-temperature magnetic susceptibilities of compounds 1-3 exhibit overall weak antiferromagnetic coupling between the adjacent Mn(II) ions.
authors.affiliation: School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China. chenjinxi@seu.edu.cn.
authors.forename: Yongbing
authors.initials: Y
authors.lastname: Lou
authors.forename: Jingjing
authors.initials: J
authors.lastname: Wang
authors.forename: Yinhua
authors.initials: Y
authors.lastname: Tao
authors.forename: Jinxi
authors.initials: J
authors.lastname: Chen
authors.forename: Akio
authors.initials: A
authors.lastname: Mishima
authors.forename: Masaaki
authors.initials: M
authors.lastname: Ohba
mesh_terms: D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D008024:Ligands; D060328:Magnetic Phenomena; D008345:Manganese / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry*; D010618:Phenanthrolines / Q000737:chemistry*; D013818:Thermogravimetry
chemical_list: C000597209:1,4-naphthalenedicarboxylate; D056831:Coordination Complexes; D008024:Ligands; D009281:Naphthalenes; D010618:Phenanthrolines; D008345:Manganese; C025205:1,10-phenanthroline