论文部分内容阅读
A new metal-organic coordination polymer [Pb(mfpdc)(CH3OH)]n (1, mfpdc=2,6-dimethyl-4-(2-furanyl) pyridine-3,5-dicarboxylate) was synthesized and characterized by single-crystal X-ray analyses. The crystal is orthorhombic, space group Pbca, a=15.6297(18), b=9.4803(11), c=18.598(2), V=2755.8(6)3 , Z=8, Mr=498.44, Dc=2.403 Mg/m3 , F(000)=1872, the final R=0.0275 and wR=0.0726 (I>2 (I)). There are interesting polynuclear zigzag (PbO5 ) n chains in the structure of 1, and there have interesting axially chiral S-and R-unit Pb4L units constructed from prochiral organic ligands through C-H···O bonding. The (R/S)-Pb4L units by sharing Pb centers generate a 2-D coordination network, in which there exist rare π65 ···Pb(3.2610 ) interactions. The solid-state photoluminescent emission of compound 1 appears at 487 nm.
A new metal-organic coordination polymer [Pb (mfpdc) (CH3OH)] n (1, mfpdc = 2,6-dimethyl- 4- (2-furanyl) pyridine-3,5-dicarboxylate) The crystal is orthorhombic, space group Pbca, a = 15.6297 (18), b = 9.4803 (11), c = 18.598 (2) , V = 2755.8 (6) 3, Z = Mr = 498.44, Dc = 2.403 Mg / m3, F (000) = 1872, the final R = 0.0275 and wR = 0.0726 (I> 2 (I)). There are interesting polynuclear zigzag (PbO5) n chains in the structure of 1, and there have interesting axially chiral S-and R-unit Pb4L units constructed from prochiral organic ligands through CH ··· O bonding. The (R / S) -Pb4L units by sharing Pb centers generate a 2-D coordination network, in which there exists rare π65 · Pb (3.2610) interactions. The solid-state photoluminescent emission of compound 1 appears at 487 nm.