A series of metal-organic frameworks based on polydentate Schiff-base ligands derived from benzil dihydrazone: synthesis, crystal structures and luminescent properties

作者：Bai Yan; Gao Hui; Dang Dong Bin^*; Guo Xiang Yang; An Bing; Shang Wei Li

来源：CrystEngComm, 2010, 12(5): 1422-1432.

DOI：10.1039/b919813j

A series of metal-organic frameworks {[AgL(1)]ClO(4)}(n) (1), {[AgL(2)(1)]BF(4)}(n) (2), {[AgL(1)(NO(3))](CH(3)CH(2)OH)}(n) (3), {[ZnL(2)(1)(NCS)(2)]CH(3)CN}(n) (4), [AgL(2)(NO(3))](n) (5), {[FeL(2)(2)Cl(2)]center dot CH(3)CN}(n) (6), {[MnL(2)(2)(NCS)(2)]center dot(CH(3)CH(2)OH)}(n) (7) and [ZnL(2)(2)(NCS)(2)](n) (8) have been synthesized and structurally characterized by IR spectroscopy, UV spectroscopy, thermogravimetric (TG) analyses, luminescent spectroscopy and complete single-crystal structure analyses, where L(1) is (N';,N';-bis[1-(pyridin-4-yl) methylidene]benzil dihydrazone) and L(2) is (N';, N';-bis[1-(pyridin-3-yl) methylidene] benzil dihydrazone), respectively. The structure of 1 exhibits a two-dimensional layer network featuring trimetal 36-membered non-planar macrocycles. Polymer 2 is a one-dimensional chain structure with tetranuclear metallacyclic rings. For polymer 3, each ligand acts as a bidentate ligand to bind two Ag(I) centers and each silver center is coordinated to two N-donors from two ligands forming a one-dimensional chain. Polymer 4 displays a two-dimensional layer network containing tetranuclear 68-membered metallocyclic rings. Polymers [AgL(2)(NO(3))](n) (5), {[FeL(2)(2)Cl(2)]center dot CH(3)CN}(n) (6), {[MnL(2)(2)(NCS)(2)]center dot(CH(3)CH(2)OH)}(n) (7) and [ZnL(2)(2)(NCS)(2)](n) (8) show all one-dimensional chain structures containing bimetallic 8-membered rings and tetrametallic 42-membered rings for 5, bimetallic 34-membered quadrangular rings for 6 and 7, and bimetallic 30-membered quadrangular rings for 8, respectively. The luminescent properties of L(1), L(2) and 1-8 in the solid state were investigated.

• 出版日期2010
• 单位河南大学