Bis[4-(2-carbamoylhydrazin-1-yl­idene-κ2 N 1,O)-5-hydroxy­methyl-2-methyl­pyridinium-3-olato-κO 3]cobalt(II) dinitrate dihydrate

The asymmetric unit of the title compound, [Co(C9H12N4O3)2](NO3)2·2H2O, consists of a discrete cationic [Co(PLSC)2]2+ complex unit [PLSC is 4-(2-carbamoylhydrazin-1-yl­idene)-5-hydroxy­methyl-2-methyl­pyridinium-3-ol­ato], two NO3 − and two water mol­ecules. The two tridentate PLSC ligands of the cation are zwitterions related to each other by a non-crystallographic C 2 axis. The CoII ion is in a disorted octa­hedral coordination environment. The crystal structure is composed of alternating NO3/H2O and complex layers supported by extensive C—H⋯O, N—H⋯O and N—H⋯N hydrogen bonding

Synthesis, Crystal Structure, Theoretical Calculations, Antibacterial Activity, Electrochemical Behavior, and Molecular Docking of Ni(II) and Cu(II) Complexes with Pyridoxal-Semicarbazone

New Ni (II) and Cu (II) complexes with pyridoxal-semicarbazone were synthesized and their structures were solved by X-ray crystallography. This analysis showed the bis-ligand octahedral structure of [Ni(PLSC-H)2]·H2O and the dimer octahedral structure of [Cu(PLSC)(SO4)(H2O)]2·2H2O. Hirshfeld surface analysis was employed to determine the most important intermolecular interactions in the crystallographic structures. The structures of both complexes were further examined using density functional theory and natural bond orbital analysis. The photocatalytic decomposition of methylene blue in the presence of both compounds was investigated. Both compounds were active toward E. coli and S. aureus, with a minimum inhibition concentration similar to that of chloramphenicol. The obtained complexes led to the formation of free radical species, as was demonstrated in an experiment with dichlorofluorescein-diacetate. It is postulated that this is the mechanistic pathway of the antibacterial and photocatalytic activities. Cyclic voltammograms of the compounds showed the peaks of the reduction of metal ions. A molecular docking study showed that the Ni(II) complex exhibited promising activity towards Janus kinase (JAK), as a potential therapy for inflammatory diseases, cancers, and immunologic disorders

Synthesis and crystal structures of [Ph3PCH2PPh3]I2 dichloromethane disolvate and [Ph3PCH2PPh3](BI4)2

Reaction of BI3 with carbodi­phospho­rane, C(PPh3)2, gives a mixture of the dicationic compounds, methyl­enebis(tri­phenyl­phospho­nium) diiodide di­chloro­methane disolvate, C37H32P22+·2I−·2CH2Cl2 or [Ph3PCH2PPh3]I2·2CH2Cl2 (I), methyl­enebis(tri­phenyl­phospho­nium) bis­(tetra­iodo­borate), C37H32P22+·2BI4− or [Ph3PCH2PPh3](BI4)2 (II). Solvents are the source of the protons at the ylidic C atom. The P—C—P angle is 124.1 (2)° for (I) and 121.7 (3)° for (II), while the two P—C bond lengths are 1.804 (4) and 1.807 (5) Å in (I), and 1.817 (5) and 1.829 (5) Å in (II). In the crystal of (I), the protons of the central P—CH2—P C atom exhibit weak C—H...I hydrogen bonds with the respective anions. The anions in turn are linked to the di­chloro­methane solvent mol­ecules by C—H...I hydrogen bonds. In the crystal of (II), one of the BI4− anions is linked to a phenyl H atom via a weak C—H...I hydrogen bond.Published versio

Synthesis, Structure and Hirshfeld Surface Analysis of Phosphine–Imidazolium Salt

In the field of homogeneous catalysis, particularly in anti-Markovnikov hydration, sterically demanding phosphine ligand has found to be very effective. Here we report the crystal structure of a phosphine-imidazolium salt which crystallized in monoclinic space group P21/c with a = 16.6623(13) (Å), b = 10.6686(8) (Å) and c = 12.8916(11) with = 110.232(2). Hirshfeld surface analysis show that the halogen–hydrogen interaction leads to a formation of 1D chain

Crystal structure of aqua(pyridoxalthiosemicarbazonato)cooper(II)bromide, [Cu(L-H)H2O]Br.

International audienc

Zyxin expression levels in non-small cell lung cancer patients

© 2020 Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved. Background/Aim. Non-small cell lung cancer (NSCLC) is the most common cause of cancer-related mortality worldwide. Early detection represents one of the most promising approaches to reduce lung cancer mortality. Zyxin (ZYX) is a member of the focal adhesion protein family, recently identified as a potential early diagnostic marker for NSCLC. The aim of this study was to evaluate ZYX expression levels in NSCLC patients and compare its serum expression profiles between early and advanced clinical stages, different histological subtypes and histological grades. Methods. Blood samples were obtained from 90 patients diagnosed with NSCLC in all clinical stages and 30 patients without the clinical and radiological findings and previous history of malignancy. For the quantitative determination of human ZYX concentrations in the serum we used enzyme-linked immunoadsorbent assay (ELISA). Results. ZYX exhibited higher serum levels in NSCLC patients as compared to the control samples with exceptionally significant difference (p = 0.00). The ROC curve demonstrated a high specificity with AUC = 0.912. There were no statistically significant differences in the ZYX values between two most common NSCLC types, adenocarcinoma and squamous cell carcinoma (p = 0.758). There were no statistically significant differences in the ZYX values among different clinical stages (p = 0.518). Only 3 patients had well-differentiated tumor, and no useful data may be extracted from their samples. There were no statistically significant differences in the ZYX values between patients with moderately differentiated tumor and poorly differentiated tumor (p = 0.48). Conclusion. We found that ZYX was overexpressed in NSCLC, but its expression level was not closely correlated with the tumor size and advanced tumor, node, metastasis (TNM) stage. Our results suggest that ZYX has potential to be an early diagnostic plasma-based tumor marker for NSCLC with the same importance for both adenocarcinoma and squamous cell carcinoma

Transition metal complexes with thiosemicarbazide-based ligands. Part 47. Synthesis, physicochemical and voltammetric characterization of iron(III) complexes with pyridoxal semi-, thiosemi- and S-methylisothiosemicarbazones

The reaction of warm EtOH solutions of FeX3·nH2O (X = Cl, NO3) with tridentate ONX (X = O, S, N) pyridoxal semi-, thiosemi- and S-methylisothiosemicabazones (H2L1, H2L2, H2L3, respectively) yielded high-spin octahedral mono- and bis(ligand) complexes of the formula [Fe(H2L1-3)Cl2(H2O)]Cl, [Fe(HL1,2)2]Cl·nH2O and [Fe(H2L3)(HL3)](NO3)2·H2O. The compounds were characterized by elemental analysis, conductometric and magnetochemical measurements, IR and UV-Vis spectra. Besides, a detailed voltammetric study of the complexes was carried out in DMF solution in the presence of several supporting electrolytes, to characterize the nature of the electrode processes and solution equilibria

Transition metal complexes with thiosemicarbazide-based ligands. Part 49. New complexes of iron(III) with deprotonated tridentate Schiff base pyridoxal derivatives

Three new bis(ligand) iron(III) complexes were prepared with the deprotonated ONX ligands (X = O,S,N), pyridoxal semi-, thiosemi- and S-methylisothiosemicarbazones (H2L1, H2L2 andH2L3, respectively) of the formulas [Fe(HL1,2)L1,2]. 4H2O and [Fe(HL3)2]OAc. 2H2O. The compounds were characterized by elemental analysis, conductometric and magnetochemical measurements, as well as by IR and UV-vis spectra. Detailed voltammetric investigations were carried out in DMF solutions in the presence of several supporting electrolytes to study the nature of the electrochemical processes and solution equilibria