Thermodynamic studies of N- allylrhodanine derivatives and their metal complexes

Investigation of structural, electronic properties and docking calculations of some boron complexes with norfloxacin: A computational research

Quantum chemical calculations are performed over BF₂R (1), B(NO)₂R (2), B(CN)₂R (3) and B(CH₃)₂R (4) [R: 1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylate]. Mentioned boron complex with fluorine atoms which is BF₂R are optimized at HF/6-31+G(d), B3LYP/6-31+G(d) and M062X/6-31+G(d) level and the best level is determined by comparison of experimental and calculated results. The best calculation level is determined as M06-2X/6-31+G(d) level. The other complexes are optimized at this level. Structural properties, IR and NMR spectrum are examined in detail. Additionally, biological activities of mentioned complexes are investigated by some quantum chemical descriptors (E_HOMO, E_LUMO, I, A, E_GAP, η, σ, χ, CP, ω, N, ΔN_max and S) and molecular docking analyses. The interaction energies for complex (1), (2), (3) and (4) are calculated as -480.1, -443.6, -433.6 and -402.1 kJ mol^-1, respectively. As a result, it is found that boron complex with fluorine atoms (BF₂R) is the best candidate for anticancer drug.

Computational investigations of trans‑platinum(II) oxime complexes used as anticancer drug

Some platinum oxime complexes are optimized at HF/CEP-31G level which has been reported as the best level for these type complexes in the gas phase. IR spectrum is calculated and the new scale factor is derived. NMR spectrum is calculated at the same level of theory and examined in detail. Quantum chemical parameters which have been mainly used are investigated and their formulas are given in detail. Additionally, selected quantum chemical parameters of studied complexes are calculated. New theoretical IC₅₀% formulas are derived and biological activity rankings of mentioned complexes are investigated.