In the title complex, {[Zn(NCS)(2)(C(15)H(15)N(9))(2)]·H(2)O}(n), the Zn(II) ion is located on an inversion centre and is six-coordinated in a distorted octa-hedral geometry, coordinated by N atoms from four bridging 1,3,5-tris-(1,2,4-triazol-1-ylmeth-yl)benzene (ttmb) ligands and two terminal SCN(-) counter-anions. Two of the three triazol groups in each ttmb ligand link the Zn(II) atoms, forming a looped-chain structure along [0-11]. The lattice water molecule shows half-occupancy due to disorder around an inversion centre.
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http://dx.doi.org/10.1107/S1600536812039256 | DOI Listing |
Phys Rev Lett
December 2024
Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastian, Spain.
The chiral lattice structure of twisted bilayer graphene with D_{6} symmetry allows for intrinsic photogalvanic effects only at off-normal incidence, while additional extrinsic effects are known to be induced by a substrate or a gate potential. In this Letter, we first compute the intrinsic effects and show they reverse sign at the magic angle, revealing a band inversion at the Γ point. We next consider different extrinsic effects, showing how they can be used to track the strengths of the substrate coupling or electric displacement field.
View Article and Find Full Text PDFSci Adv
January 2025
Department of Biochemistry and Molecular Biology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA.
Alzheimers Dement
December 2024
University of Texas Health Science Center at Houston, Houston, TX, USA.
Background: Structural variants (SVs), genomic alterations exceeding 50 base-pairs, are known for their significant impact on disease pathology. However, the role of SVs in Alzheimer's Disease (AD) remains unclear. Using a novel high-accuracy SV calling pipeline, we analyzed a diverse sample from the Alzheimer's Disease Sequencing Project (ADSP).
View Article and Find Full Text PDFPhys Rev Lett
December 2024
Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA.
Bilayers of two-dimensional van der Waals materials that lack an inversion center can show a novel form of ferroelectricity, where certain stacking arrangements of the two layers lead to an interlayer polarization. Under an external out-of-plane electric field, a relative sliding between the two layers can occur, accompanied by an interlayer charge transfer and a ferroelectric switching. We show that the domain walls that mediate ferroelectric switching are a locus of strong attractive interactions between electrons.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
Background: Sleep and circadian disruption are associated with increased dementia risk, yet the mechanism remains poorly understood. We examined the relationship between night/shift working in the fourth decade and late-life brain health. We explored whether significant relationships were mediated by life course factors including cardiovascular risk.
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