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A rare case of a zero-field single-ion magnet in a cerium(III) pseudo-icosahedral complex.
Dalton Trans
January 2025
School of Chemistry, The University of New South Wales (UNSW), Kensington, Sydney, 2052, Australia.
The synthesis and structural characterisation of [Ln(Tp)]I (1-Ln; Ln = La, Ce, Pr, Nd) (Tp = hydrotris(3-(2'-furyl)-pyrazol-1-yl)borate) have been reported as an isomorphous series adopting pseudo-icosahedral ligand field geometries. Continuous shape measurement (CShM) analyses on the crystal field environments of 1-Ln show the smallest values yet reported for complexes employing two hexadentate ligands (-scorpionate environments), with the smallest belonging to 1-La. Single-ion magnetism for 1-Ce, 1-Pr and 1-Nd was probed with ac magnetic susceptibility studies revealing slow magnetic relaxation for 1-Nd in applied magnetic fields and in zero-applied field for 1-Ce, which is a rare observation for Ce(III)-based single-ion magnets.
View Article and Find Full Text PDFOral Blue Nevus of the Lingual Gingiva: A Case Report.
Cureus
January 2025
College of Dentistry, King Saud University, Riyadh, SAU.
Oral melanocytic nevi (OMN) are rare benign tumors originating from melanocytes with an unclear pathogenesis. The current theory suggests that OMN originate from dormant dendritic melanocytes that become enclosed in the dermis during the embryonic migration of melanoblasts - the precursors of melanocytes - from the neural crest to the epidermis. OMN can be congenital or acquired, with acquired nevi being more common.
View Article and Find Full Text PDFAcquired Vulvar Lymphangioma Following CO Laser Treatment for Sebaceous Gland Nevus in a 10-Year-Old Girl: A Case Report.
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January 2025
Guangzhou Dermatology Hospital, Guangzhou, Guangdong, 510095, People's Republic of China.
Acquired vulvar lymphangioma (AVL) is a rare condition characterized by abnormal lymphatic vessels in the vulva. We describe a 10-year-old female patient who presented with vulvar swelling for 23 days. She has no history of sexual assault and irradiation.
View Article and Find Full Text PDFInvasive Hydatidiform Mole Mimicking Ectopic Pregnancy: A Case Report and Literature Analysis.
Am J Case Rep
January 2025
Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
BACKGROUND Gestational trophoblastic diseases (GTDs) are a group of benign and malignant tumors that arise from placental tissue. Ectopic pregnancies most commonly occur within the fallopian tubes. The estimated incidence of ectopic gestational trophoblastic diseases (GTDs) is approximated at 1.
View Article and Find Full Text PDFProtonation effects in protein-ligand complexes - a case study of endothiapepsin and pepstatin A with computational and experimental methods.
ChemMedChem
January 2025
Crystals First GmbH, -, GERMANY.
Protonation states serve as an essential molecular recognition motif for biological processes. Their correct consideration is key to successful drug design campaigns, since chemoinformatic tools usually deal with default protonation states of ligands and proteins and miss atypical protonation states. The protonation pattern for the Endothiapepsin/PepstatinA (EP/pepA) complex is investigated using different dry lab and wet lab techniques.
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