The title complex, [Cu(2)(C(13)H(11)F(2)N(6)O)(2)](ClO(4))(2), which was hydro-thermally synthesized, contains a binuclear copper cluster (2 symmetry) with a Cu(2)O(2) rhombus [Cu-O = 1.927 (2) Å] formed by donation of two O atoms from two chelate rings. The tridentate function of each ligand is completed by two N atoms coordinated to the two Cu(II) atoms [Cu-N = 1.933 (2) Å]. The separation distance of two Cu(II) atoms in a cluster is 2.988 (1) Å. The dihedral angle between the six-membered chelate rings is 2.13 (9)°. The perchlorate counter-anion is disordered over two sites in a 0.58 (10):0.42 (10) ratio.
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http://dx.doi.org/10.1107/S1600536810008512 | DOI Listing |
Gastro Hep Adv
September 2024
Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo, Japan.
An 11-year-old girl with quiescent ulcerative colitis had sustained elevation of liver enzymes. Although she had no clinical symptoms suggestive of Wilson's disease, such as Kayser-Fleischer rings, laboratory data showed decreased serum copper and ceruloplasmin levels and increased urinary copper excretion. Genetic testing showed pathogenic variants in allele 1: c.
View Article and Find Full Text PDFmBio
December 2024
Department of Microbiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA.
Bacteria encounter numerous stressors in their constantly changing environments and have evolved many methods to deal with stressors quickly and effectively. One well-known and broadly conserved stress response in bacteria is the stringent response, mediated by the alarmone (p)ppGpp. (p)ppGpp is produced in response to amino acid starvation and other nutrient limitations and stresses and regulates both the activity of proteins and expression of genes.
View Article and Find Full Text PDFPhys Chem Chem Phys
January 2025
Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Single-crystal structures of four alditol complexes are presented. In LuCl/galactitol and ScCl/-inositol complexes, μ-bridge-relevant deprotonations were observed. The polarization from two rare earth ions in the μ-bridge activates the chemically inert OH and promotes deprotonation.
View Article and Find Full Text PDFIn the hydrated title complex, [Fe(dpa)(N)]·HO (dpa is 2,2'-di-pyridyl-amine, CHN), the Fe ion is coordinated in a distorted octa-hedral manner by two neutral, chelating dpa ligands and two anionic, monodentate azide (N ) ions in a -configuration. Distortion results from different Fe-N bond lengths [2.1397 (13)-2.
View Article and Find Full Text PDFCureus
October 2024
Department of Pediatrics, Salmaniya Medical Complex, Manama, BHR.
Introduction Wilson disease (WD) is a rare inherited autosomal recessive disorder caused by a mutation in the gene. This mutation affects copper metabolism, leading to the accumulation of copper in the liver, brain, cornea, and other tissues. If not treated, WD can lead to significant morbidities.
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