Origin of C NMR chemical shifts elucidated based on molecular orbital theory: paramagnetic contributions from orbital-to-orbital transitions for the pre-α, α, β, α-X, β-X and -X effects, along with effects from characteristic bonds and groups.

C NMR chemical shifts ((C)) were analysed MO theory, together with the origin, using (C), (C) and (C), where C was selected as the standard for the analysis since (C: C) = 0 ppm. An excellent relationship was observed between (C) and the charges on C for (C, C, C, C and C) and (C, CH , CH and CH). However, such a relationship was not observed for the carbon species other than those above.

Extremely stable system of 1-haloselanyl-anthraquinones: experimental and theoretical investigations.

Highly stable selanyl halides, 1-ATQSeX (X = I (1), Br (2) and Cl (3)), were prepared. The structures of 1, 2, 6 (1-ATQSeX: X = Me) and 7 (1-ATQBr) were determined. QC calculations were performed on 1-3, 4 (X = F), 5 (X = H), 6, 7 and 8 (X = SeATQ-1).

Origin of O NMR chemical shifts based on molecular orbital theory: paramagnetic terms of the pre-α, α and β effects from orbital-to-orbital transitions, along with the effects from vinyl, carbonyl and carboxyl groups.

O NMR chemical shifts ((O)) were analysed based on the molecular orbital (MO) theory, using the diamagnetic, paramagnetic and total absolute magnetic shielding tensors ((O), (O) and (O), respectively). O was selected as the standard for the analysis. An excellent relationship was observed between (O) and the charges on O for O, O, O, O and O.

Intrinsic dynamic and static natures of Pn--X--Pn σ(3c-4e) type interactions (Pn = Pn = N, P, As and Sb; X = H, F, Cl, Br and I) in bicyclo[3.3.3] and bicyclo[4.4.4] systems and their behaviour, elucidated with QTAIM dual functional analysis.

The intrinsic dynamic and static natures of Pn--X--Pn (Pn = Pn: N, P, As and Sb; X = H, F, Cl, Br and I) in 1a-8c were elucidated with the quantum theory of atoms-in-molecules dual functional analysis (QTAIM-DFA). Species 1a-8c were formed by incorporating X between Pn and Pn of Pn(CHCHCH)Pn (1-4) and Pn(CHCHCHCH)Pn (5-8). The relative stabilities between the symmetric and nonsymmetric structures along with their transition states were investigated.

Living-Donor Liver Transplantation for Erythropoietic Protoporphyria: A Case Report and Literature Review.

Erythropoietic protoporphyria (EPP) is a very rare disease with an estimated prevalence of 1 in 200,000 individuals. Decreased ferrochelatase activity causes the accumulation of protoporphyrin in the body, and light exposure results in the generation of active oxygen, causing photosensitivity. Liver damage has the greatest influence on the prognosis, and liver transplantation is the only treatment option for patients with decompensated liver cirrhosis.