student crystal structure activity using crystalmaker

Thermal decomposition studies of novel complexes have shown the formation of zinc oxide as the end product.This activity was selected for the On the Cutting Edge Exemplary Teaching Collection

With other pyridine ligands possessing amide or hydroxyl functional groups, the connectivity patterns in the crystal structures of their complexes are governed by hydrogen bonding interactions. π stacking, C–H∙∙∙ π, and C–H∙∙∙O intermolecular interactions.Since pyridine and 3,5-lutidine are not able to form hydrogen-bonding interactions, the solid state structures of their complexes, ( 1) and ( 2), are governed by π The influence of substituents on the pyridine-based ligand over intermolecular interactions in the solid state is investigated. The metal ion thereby attains a five-numbered coordination environment that is best described as a distorted square-pyramid ( τ parameter equals 0.39). The coordination sphere of zinc(II) in the 4-pyridone complex consists of only three ligands, two quinaldinates, and one secondary ligand. With the exception of ( 6), all complexes feature a six-numbered coordination environment of metal ion that may be described as a distorted octahedron. In all reactions, the structural fragment with quinaldinate ions bound in a bidentate chelating manner retained its structural integrity. Substitution of methanol in (quin − denotes an anionic form of quinoline-2-carboxylic acid, also known as quinaldinic acid) with pyridine (Py) or its substituted derivatives, 3,5-lutidine (3,5-Lut), nicotinamide (Nia), 3-hydroxypyridine (3-Py-OH), 3-hydroxymethylpyridine (3-Hmpy), 4-hydroxypyridine (4-Py-OH) and 4-hydroxymethylpyridine (4-Hmpy), afforded a series of novel heteroleptic complexes with compositions ( 1), ( 2), ♲CH 3CN ( 3), ( 4), ( 5), ( 6) (4-Pyridone = a keto tautomer of 4-hydroxypyridine), and ( 7).

Student crystal structure activity using crystalmaker