Structures, Magnetic Properties, and Photoluminescence of Dicarboxylate Coordination Polymers of Mn, Co, Ni, Cu Having N-(4-Pyridylmethyl)-1,8-naphthalimide
Nath, JK; Mondal, A; Powell, AK; Baruah, JB
| HERO ID | 3575807 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Structures, Magnetic Properties, and Photoluminescence of Dicarboxylate Coordination Polymers of Mn, Co, Ni, Cu Having N-(4-Pyridylmethyl)-1,8-naphthalimide |
| Authors | Nath, JK; Mondal, A; Powell, AK; Baruah, JB |
| Journal | Crystal Growth & Design |
| Volume | 14 |
| Issue | 9 |
| Page Numbers | 4735-4748 |
| Abstract | Supramolecular interactions of N-(4-pyridylmethyl)-1,8-naphthalimide (L) and flexibility of intervening units of dicarboxylate ligands contribute to formation of different types of coordination polymers such as [MnL2(Adp)(H2O)(2)](n)center dot 2nH(2)O (1), [CoL2(Fum)(H2O)(2)]n center dot-2nH(2)O (2), [CoL2(Adp)(H2O)(2)](n)center dot 2nH(2)O (3), [NiL(Fum)(H2O)(3)](n)center dot H2O (4), [CuL2(Fum)](n)center dot nH(2)O (5), [CuL(Mal)](n) (6), and [Cu3L6(Adp)(3)(H2O)(3)] (7) (where Adp = adipate, Fum = fumarate, and Mal = malonate). These coordination polymers are structurally characterized. Coordination polymers 1 and 3 are isostructural having three-dimensional (3D) supramolecular layer-like structures. Coordination polymer 2 forms a two-dimensional (2D) supramolecular network through C-H center dot center dot center dot pi and O center dot center dot center dot pi interactions. Coordination polymer 4 forms H-bonded 3D chainlike supramolecular architecture. Coordination polymer 5 forms a 3D supramolecular sheet-like structure, whereas coordination polymer 6 and coordination polymer 7 forms a 2D lamellar structure through pi center dot center dot center dot pi and C-H center dot center dot center dot pi interactions. Manganese coordination polymer 1 shows weak antiferromagnetic interactions between chains at low temperature and also exhibits single chain magnetic behavior. Coordination polymers 2 and 3 show saturation value of magnetic moment at 2 K and 7 T, which are lower than the spin-only Co(II) ion. Coordination polymer 4 show spin-only values for NO) ion. The room-temperature chi T-M value for coordination polymer 5 is dose to the spin-only value for two Cu(II) ions. With lowering of the temperature, the chi T-M value remains constant to 35 K, from where the value begins to decrease to a minimum at 2 K. For copper coordination polymer 6 value of chi T-M smoothly decreases with lowering of the temperature to attain a quasi plateau between 80 K and 35 K, and it further sharply increases at 2 K. Coordination polymer 7 shows spin-only Cu(II) ion. These coordination polymers in solid state show quenching of fluorescence emission of ligand L, as well as a shift of emission toward a shorter wavelength. |
| Doi | 10.1021/cg500882z |
| Wosid | WOS:000341226500059 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |