Three Mn(II) coordination polymers with a bispyridyl-based quinolinate ligand: the anion-controlled tunable structural and magnetic properties.
Three new Mn(ii) coordination polymers, namely [Mn3L6·2H2O] (), [MnL2] (), and [MnL2·2H2O] (), were prepared by solvothermal reactions of Mn(ii) salts with a bispyridyl-based quinolinate ligand. All complexes were characterized by elemental analysis, IR spectra, powder and single-crystal X-ray crystallography. Single crystal X-ray studies show that these coordination polymers exhibit a structural diversification due to the different counteranions (OAc(-), Cl(-), and NO3(-)). Complex has a 2D supramolecular structure with a cyclic tetramer Mn3L6 secondary building unit. Complex possesses a rhombohedral grid network containing a type of meso-helical chain (P + M) constructed via the metal-ligand coordination interaction. Complex features a 3D non-porous structure based on the arrangement of 2D grids. Magnetic susceptibility measurements indicate that the three Mn(ii) polymers show disparate magnetic properties due to their different supramolecular structures.
School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China.
Guozan
G
Yuan
Weilong
W
Shan
Bin
B
Liu
Lulu
L
Rong
Liyan
L
Zhang
Hui
H
Zhang
Xianwen
X
Wei
D000838:Anions / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008024:Ligands; D060328:Magnetic Phenomena; D008345:Manganese / Q000737:chemistry*; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D017378:Quinolinic Acid / Q000737:chemistry*
D000838:Anions; D056831:Coordination Complexes; D008024:Ligands; D009942:Organometallic Compounds; D011108:Polymers; D011725:Pyridines; D008345:Manganese; D017378:Quinolinic Acid