Tetra­aqua­bis[3-(4-pyrid­yl)benzoato-κN]nickel(II)

The NiII atom in the title compound, [Ni(C12H8NO2)2(H2O)4], exists in an all-trans octa­hedral coordination environment. The 3-(4-pyrid­yl)benzoate ligand binds to Ni atom through the pyridyl N atom; the pyridine and benzene rings are oriented at a dihedral angle of 26.27 (10)°. Adjacent complexes are linked by O—H⋯O hydrogen bonds, forming a three-dimensional network. The metal atom lies on a special position of 2 site symmetry in the crystal structure

Noise discrimination method based on charge distribution of CMOS detectors for soft X-ray

Complementary metal-oxide semiconductor (CMOS) sensors have been widely used as soft X-ray detectors in several fields owing to their recent developments and unique advantages. The parameters of CMOS detectors have been extensively studied and evaluated. However, the key parameter signal-to-noise ratio in certain fields has not been sufficiently studied. In this study, we analysed the charge distribution of the CMOS detector GSENSE2020BSI and proposed a two-dimensional segmentation method to discriminate signals according to the charge distribution. The effect of the two-dimensional segmentation method on the GSENSE2020BSI dectector was qualitatively evaluated. The optimal feature parameters used in the two-dimensional segmentation method was studied for G2020BSI. However, the two-dimensional segmentation method is insensitive to feature parameters.Comment: 19 pages, 13 figures, submitted to NIM-

Bis[(1-methyl-1H-benzimidazol-2-yl)methanol-κ2 N 3,O]bis­(thio­cyanato-κN)cobalt(II) methanol solvate

In the mononuclear title complex, [Co(NCS)2(C9H10N2O)2]·CH3OH, the cobalt(II) ion is surrounded by two (1-methyl-1H-benzimidazol-2-yl)methanol bidentate ligands and two thio­cyanate ligands, and exhibits a distorted octa­hedral coordination by four N atoms and two O atoms. The structure is consolidated by hydrogen bonds between the organic ligand, thio­cyanate anion and the uncoordinated methanol mol­ecule, leading to a chain along [100]

Diazido­bis[(1-methyl-1H-benzimidazol-2-yl)methanol-κ2 N 3,O]manganese(II)

The title complex, [Mn(N3)2(C9H10N2O)2], possesses crystallographically imposed twofold symmetry. The MnII atom is coordinated by four N atoms and two O atoms in a distorted octa­hedral geometry. The crystal packing is stabilized by strong inter­molecular O—H⋯N hydrogen bonds

Nuclear symmetry potential in the relativistic impulse approximation

Using the relativistic impulse approximation with the Love-Franey \textsl{NN} scattering amplitude developed by Murdock and Horowitz, we investigate the low-energy (100 MeV$\leq E_{\mathrm{kin}}\leq 400$ MeV) behavior of the nucleon Dirac optical potential, the Schr\"{o}dinger-equivalent potential, and the nuclear symmetry potential in isospin asymmetric nuclear matter. We find that the nuclear symmetry potential at fixed baryon density decreases with increasing nucleon energy. In particular, the nuclear symmetry potential at saturation density changes from positive to negative values at nucleon kinetic energy of about 200 MeV. Furthermore,the obtained energy and density dependence of the nuclear symmetry potential is consistent with those of the isospin- and momentum-dependent MDI interaction with $x=0$, which has been found to describe reasonably both the isospin diffusion data from heavy-ion collisions and the empirical neutron-skin thickness of $^{208}$Pb.Comment: 8 pages, 5 figures, revised version to appear in PR

7H-Chromeno[3,2-h]quinolin-7-one methanol monosolvate

The four-ring system in the title compound, C16H9NO2·CH3OH, is planar (r.m.s deviation = 0.03 Å); the methanol solvent mol­ecule forms a hydrogen bond to the quinoline N atom

Diaqua­bis[2-(4-bromo­phen­yl)acetato]bis­(N 4,N 4-dimethyl­pyridin-4-amine)copper(II)

In the title compound, [Cu(C8H6BrO2)2(C7H10N2)2(H2O)2], the CuII atom (site symmetry ) adopts a Jahn–Teller-distorted trans-CuN2O4 octa­hedral coordination, with the aqua O atoms in axially extended sites. An intra­molecular O—H⋯O hydrogen bond helps to establish the conformation and an inter­molecular O—H⋯O hydrogen bond is seen in the crystal packing