Construction of six new coordination complexes with 5-(3-pyridyl) tetrazole-2-acetato

Synthesis, Characterization and Properties of TbIII and DyIII Coordination Compounds based on Isomeric Ligands

“…pyridyl)tetrazole-2-acetato] compound in which pytza adopts a μ 1,1,3 -COO bridging mode. [9] The structure of 3 is distinct from that of [Tb(pytza) 2 Cl(H 2 O) 2 ], though, pmtza resembles pytza. Although compound 3 is similar to 1, what is different is that an uncoordinated chloride anion exists in the molecule rather than a pmtza anion to keep balance with the charge of Tb III , which may be ascribed to the nature of the ligand.…”

Coordination Architectures of Manganese Complexes based on the Liagnd 3‐Pytza or Mixed Ligands [3‐Pytza = 5‐(3‐Pyridyl)tetrazole‐2‐acetato]

“…Generally, the intraligand fluorescence emission wavelength is determined by the energy gap between the π and π* molecular orbitals of the free ligand, which is related to the extent of π conjugation. [26] The intensities of compounds 1 and 2 are obviously lower than that of the free ligand K3-pytza, this can be explained by the factor that they contain manganese, whose low d-d transitions quench luminescence. Therefore, luminescence in such complexes is usually very weak.…”

Counterion‐Directed Assembly of Praseodymium(III) Compounds based on the Flexible Ligand 5‐Aminotetrazole‐1‐propionic Acid (Hatzp)

“…The Pr-O distances range from 2.399 to 2.607 Å, which are in well accordance with those of the previously reported praseodymium compounds. [12] The oxygen atoms from the nitrate anions connect the adjacent atzp -anions through [N(1)···O (11) …”

“…Generally, the intraligand fluorescence emission wavelength is determined by the energy gap between the π and π* molecular orbitals of the free ligand, which is related to the extent of π conjugation. [12] Figure 4. Emission spectra of atzp and compounds 1 and 2 at room temperature in the solid state (λ ex = 371 nm for atzp; λ ex = 369 nm for 1 and 2).…”

“…While choosing metal ions, it is recognized that lanthanide coordination compounds stems have diverse structures, [4,[6][7][8] along with potential applications as advanced functional materials, in the field of luminescence, catalysis, gas storage and so on. [9][10][11][12] In addition, many factors, such as counterions, pH value, solvent system, temperature are likely to influence the eventual structures of the targeted molecules and add to the novelty of the structures.…”