title: Secondary spacer modulated assembly of polyoxometalate based metal-organic frameworks.
abstract: To investigate the influence of a secondary spacer on the resulting structures of POMOFs containing pytz, five new compounds with different dimensionalities, [Cu(5)(2-pytz)(6)(H(2)O)(4)][SiMo(12)O(40)]·3H(2)O (1), [Cu(3)(2-pytz)(4)bipy][H(2)SiMo(12)O(40)]·bipy (2), [Cu(3)(2-pytz)(2)(bipy)(4)(H(2)O)(6)][H(4)SiW(12)O(40)](2)·6H(2)O (3), [Cu(2)(2-pytz)(phen)(OH)](2)[SiW(12)O(40)]·H(2)O (4), [Cu(3)(4-pytz)(4)(H(2)O)(4)][H(2)SiW(12)O(40)]·2H(2)O (5), were synthesized. When only 2-pytz was employed, compound 1 with a 3D framework was obtained, whereas when the secondary spacers (4,4'-bipy, phen and 4-pytz) were introduced into the reaction system of 1, compounds 2-5 were obtained and exhibit a broad range of structures, including 0D, 1D, 2D and 3D frameworks. It can be observed from the architectures of compounds 1-5 that the secondary spacers have a great effect on the structures of the MOFs, which results in the formation of various dimensional POMOF compounds. Additionally, photocatalytic experiments of 1-5 for the photocatalytic degradation of RhB under UV irradiation were also investigated.
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China.
authors.forename: Jing-Quan
authors.initials: JQ
authors.lastname: Sha
authors.forename: Jing-Wen
authors.initials: JW
authors.lastname: Sun
authors.forename: Meng-Ting
authors.initials: MT
authors.lastname: Li
authors.forename: Cheng
authors.initials: C
authors.lastname: Wang
authors.forename: Guang-Ming
authors.initials: GM
authors.lastname: Li
authors.forename: Peng-Fei
authors.initials: PF
authors.lastname: Yan
authors.forename: Long-Jiang
authors.initials: LJ
authors.lastname: Sun
mesh_terms: D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008968:Molecular Conformation; D010782:Photolysis; D012235:Rhodamines / Q000737:chemistry; D017973:Tungsten Compounds / Q000737:chemistry*; D014466:Ultraviolet Rays; D000099294:Polyoxometalates
chemical_list: D056831:Coordination Complexes; D003300:Copper; D012235:Rhodamines; D017973:Tungsten Compounds; C102296:polyoxometalate I; D000099294:Polyoxometalates; C029773:rhodamine B