2,975 research outputs found
2,2′-Dichloro-1,1′-[(propane-1,3-diyldioxy)bis(nitrilomethylidyne)]dibenzene
The title compound, C17H16Cl2N2O2, assumes a V-shape configuration with a dihedral angle between the two halves of the molecule of 79.60 (4)°. The asymmetric unit comprises one half-molecule with a crystallographic twofold rotation axis passing through the central C atom. There are weak intermolecular π–π stacking interactions between neighbouring benzene rings with intermolecular plane-to-plane distances of 3.277 (6) and 3.465 (5) Å along the a and c axes, respectively. In the crystal structure, weak intermolecular C—H⋯O bonds link each molecule to four others to form an infinite three-dimensional network
{3,3′-Bis[(anthracen-9-yl)methyl]-1,1′-[(ethane-1,2-diyldioxy)bis(ethane-1,2-diyl)]bis(imidazol-2-ylidene)}mercury(II) bis(hexafluoridophosphate) acetonitrile disolvate
In the title compound, [Hg(C42H38N4O2)](PF6)2·2CH3CN, the HgII cation lies on a twofold axis which is also the internal symmetry element of the complete cationic complex. The HgII cation is coordinated by two symmetry-related C(carbene) atoms [Hg—C = 2.058 (9) Å] in a nearly linear geometry, with a C—Hg—C angle of 175.8 (5)°. There are weak intermolecular C—H⋯F interactions in the crystal packing between an F atom of a hexafluoridophosphate anion and a –CH2– group of the bis-N-heterocyclic carbene ligand
Astrocytes in intracerebral hemorrhage: impact and therapeutic objectives
Intracerebral hemorrhage (ICH) manifests precipitously and profoundly impairs the neurological function in patients who are affected. The etiology of subsequent injury post-ICH is multifaceted, characterized by the intricate interplay of various factors, rendering therapeutic interventions challenging. Astrocytes, a distinct class of glial cells, interact with neurons and microglia, and are implicated in a series of pathophysiological alterations following ICH. A comprehensive examination of the functions and mechanisms associated with astrocytic proteins may shed light on the role of astrocytes in ICH pathology and proffer innovative therapeutic avenues for ICH management
Bis(N,N-dimethylformamide-κO)bis(2,4,6-trinitrophenolato-κ2 O 1,O 2)copper(II)
The molecule of the title complex, [Cu(C6H2N3O7)2(C3H7NO)2], is disposed about a crystallographic centre of symmetry. The CuII cation is six-coordinated by two phenolate O atoms and two ortho-nitro O atoms of two picrate units and by two carbonyl O atoms from two coordinated dimethylformamide molecules, forming a distorted octahedral geometry
The Mineral Nutrients Content and the Organic Manure Quality Appraisal for the \u3cem\u3eStylosanthes\u3c/em\u3e Green Manure
Stylo (Stylosanthes spp.) is a leguminous crop planted widely in the world tropics. In the past the stylo was commonly used as pasture with high quality, and was less used as a green manure. However, stylo is recently used more as a green manure in tropical plantations. As there is little relevant research on the organic manure quality for stylo, the purpose of this research was to evaluate the quality of stylo green manure. Selection of stylo green manure with the highest quality was based on the analysis of nutrients and organic matter content in stylo
Strain Induced One-Dimensional Landau-Level Quantization in Corrugated Graphene
Theoretical research has predicted that ripples of graphene generates
effective gauge field on its low energy electronic structure and could lead to
zero-energy flat bands, which are the analog of Landau levels in real magnetic
fields. Here we demonstrate, using a combination of scanning tunneling
microscopy and tight-binding approximation, that the zero-energy Landau levels
with vanishing Fermi velocities will form when the effective pseudomagnetic
flux per ripple is larger than the flux quantum. Our analysis indicates that
the effective gauge field of the ripples results in zero-energy flat bands in
one direction but not in another. The Fermi velocities in the perpendicular
direction of the ripples are not renormalized at all. The condition to generate
the ripples is also discussed according to classical thin-film elasticity
theory.Comment: 4 figures, Phys. Rev.
- …