Spectroscopic evidence for the coordination of oxygen donor ligands to tetraphenylporphinatozinc

Absolute Configurational Assignments of Amino Acid Esters by a CD‐Sensitive Malonamide‐Linked Zinc Bisporphyrinate Host

“…[13] On the other hand, the coordination of zinc porphyrin to oxygen or nitrogen in general leads to bathochromic shifts as compared to four-coordinate zinc porphyrins. [14] In the current case, such a shoulder at longer wavelength could be caused by the coordination of the carbonyl oxygen from neighbouring bisporphyrin to the zinc, which causes the aggregation of [Zn 2 -1]. It is consistent with the NMR studies (vide supra).…”

Synthesis, structure elucidation, biological screening, molecular modeling and DNA binding of some Cu(II) chelates incorporating imines derived from amino acids

“…TG can directly record the loss in weight with time or temperature due to dehydration or decomposition. Routine measurements can be made at temperature range from ambient to 750 o C with inert atmosphere [50]. Thermogravimetric analyses of synthesized complexes are observed in 3 steps, (i) a small weight loss which is assigned to loss of lattice water molecules, except DSPCu complex is stable up to 113.1 o C, indicating that absence of lattice water molecules, (ii) maximum weight loss which is assigned to the loss of coordinated water molecules, but in this paper all complexes don't contain coordinated water molecules, (iii) gradual weight loss can be assigned to complete decomposition of ligand moiety around the metal ion.…”

Molecular recognition of carbohydrates by functionalized zinc porphyrins

“…is consistent with the coordination of a hydroxy group to zinc 4. The binding constants are listed in Tablel.$ Principal results are summarized as follows.…”