Exploratory COVID-19 death risk score based on basic laboratory tests and physiological clinical measurements.

Background: In the event of a sudden shortage of medical resources, a rapid, simple, and accurate prediction model is essential for the 30-day mortality rate of patients with COVID-19.

Methods: This retrospective study compared the characteristics of the survivals and non-survivals of 278 patients with COVID-19. Logistic regression analysis was performed to obtain the "COVID-19 death risk score" (CDRS) model.

-Associated Hemophagocytic Lymphohistiocytosis and Guillain-Barre Syndrome: A Case Report.

(), a Gram-negative bacterium, belongs to microaerobic bacteria. We reported a 21-year-old male patient diagnosed with hemophagocytic lymphohistiocytosis (HLH) due to infection, who presented with multiple clinical manifestations of peripheral nerve injury, such as ophthalmoplegia, facial paralysis, and urinary retention during the treatment. Electromyography showed neurogenic injury and the final diagnosis was Guillain-Barre Syndrome (GBS).

Utilizing reclassification to explore characteristics and prognosis of KDIGO AKI subgroups: a retrospective analysis of a multicenter prospective cohort study.

Background: Acute kidney injury (AKI) is widespread in the intensive care unit (ICU) and affects patient prognosis. According to Kidney Disease: Improving Global Outcomes (KDIGO) guidelines, the absolute and relative increases of serum creatinine (Scr) are classified into the same stage. Whether the prognosis of the two types of patients is similar in the ICU remains unclear.

Cobalt(II)-Based 3D Coordination Polymer with Unusual 4,4,4-Connected Topology as a Dual-Responsive Fluorescent Chemosensor for Acetylacetone and CrO.

A cobalt(II) coordination polymer with an unusual 4,4,4-connected network was hydrothermally synthesized and observed with high thermal, solvent, and pH stabilities. This polymer can serve as the first dual-responsive fluorescent chemosensor for the selective detection of acetylacetone and CrO ion (pH 3.0) in aqueous systems.

{3,3'-Bis[(anthracen-9-yl)meth-yl]-1,1'-[(ethane-1,2-diyldi-oxy)bis-(ethane-1,2-di-yl)]bis-(imidazol-2-yl-idene)}mercury(II) bis-(hexa-fluoridophosphate) acetonitrile disolvate.

In the title compound, [Hg(C(42)H(38)N(4)O(2))](PF(6))(2)·2CH(3)CN, the Hg(II) cation lies on a twofold axis which is also the inter-nal symmetry element of the complete cationic complex. The Hg(II) 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.

1,4-Bis(1H-benzimidazol-1-yl)but-2-ene.

In the pseudo-centrosymmetric mol-ecule of the title compound, C(18)H(16)N(4), two benzimidazole fragments form the dihedral angles of 83.49 (7) and 79.37 (7)°, with the mean plane of the linking butene chain.

1,1'-[1,4-Phenyl-enebis(methyl-ene)]bis-(2-methyl-1H-imidazol-3-ium) 2,4-dicarb-oxy-benzene-1,5-dicarboxyl-ate monohydrate.

In the dication of the title compound, C(16)H(20)N(4) (2+)·C(10)H(4)O(8) (2-)·H(2)O, the dihedral angles formed by mean planes of the imidazolium rings and the benzene ring are 69.05 (18) and 89.1 (2)°.

1,4-Bis[(1H-pyrazol-1-yl)meth-yl]benzene.

In the title compound, C(14)H(14)N(4), the center of the phenyl-ene group is a crystallographic center of inversion. The compound is composed of three aromatic rings displaying a Z-like conformation. The dihedral angle between the pyrazole rings and the central phenyl ring is 83.

Hexa-kis-(1-benzyl-1H-imidazole-κN)manganese(II) bis-(perchlorate).

In the title compound, [Mn(C(10)H(10)N(2))(6)](ClO(4))(2), the Mn(II) ion, located on an inversion center, is coordinated by six N atoms from three pairs of symmetry-related 1-benzyl-1H-imidazole ligands in a distorted octa-hedral geometry. In the crystal, weak inter-molecular C-H⋯O hydrogen bonds link the complex cations and perchlorate anions.

[μ-1,4-Bis(1,2,4-triazol-1-ylmeth-yl)benzene]-bis-[aqua-(pyridine-2,6-dicarboxyl-ato)copper(II)] monohydrate.

The title compound, [Cu(2)(C(7)H(3)NO(4))(2)(C(12)H(12)N(6))(H(2)O)(2)]·H(2)O, displays a discrete dinuclear structure, in which the central Cu(II) atom is five-coordinated in a distorted square-based pyramidal coordination geometry and the flexible ligand 1,4-bis-(1,2,4-triazol-1-ylmeth-yl)benzene adopts a bis-monodentate bridging mode linking the Cu(II) atoms. It is further assembled by O-H⋯O hydrogen-bond inter-actions involving both the coordinated and uncoordinated water molecules. The latter exhibits half-occupancy.

Bis(2-propyl-1H-imidazol-3-ium) bis-(pyridine-2,6-dicarboxyl-ato-κO,N,O)cadmate(II).

The title salt, (C(6)H(11)N(2))(2)[Cd(C(7)H(3)NO(4))(2)], displays a discrete mononuclear structure, in which the central Cd(II) atom is six-coordinated in a distorted octa-hedral coordination geometry by two N and four O atoms from two different pyridine-2,6-dicarboxyl-ate anions in an O(2),N,O(6)-tridentate chelation mode. The crystal packing is stabilized by N-H⋯O hydrogen bonds and π-π inter-actions [centroid-centroid distance = 3.576 (5) Å].

Poly[[(1,10-phenanthroline)(μ-l-tartrato)zinc] hexa-hydrate].

The title compouand {[Zn(C(4)H(4)O(6))(C(12)H(8)N(2))]·6H(2)O}(n), has a linear chain structure parallel to [100] with Zn(C(4)H(4)O(6))(C(12)H(8)N(2)) repeat units; the asymmetric unit consists of one Zn(2+) cation, one l-tartrate dianion, one 1,10-phenanthroline and six free water mol-ecules. The Zn atom is in a distorted octa-hedral ZnN(2)O(4) coordination environment. The crystal structure is stabilized by O-H⋯O hydrogen bonds and π-π stacking of the phenanthroline units [centroid-centroid distances in the range 3.

3,3'-(p-Phenyl-enedimethyl-ene)di-1H-imidazol-1-ium bis-(4-nitro-benzoate)-4-nitro-benzoic acid (1/2).

The asymmetric unit of the title compound, C(14)H(16)N(4) (2+)·2C(7)H(4)NO(4) (-)·2C(7)H(5)NO(4), comprises one-half of the 3,3'-(p-phenyl-enedimethyl-ene)di-1H-imidazol-1-ium dication, which lies on an inversion centre, one 4-nitro-benzoate anion and one 4-nitro-benzoic acid mol-ecule. In the crystal, the components are linked into a two-dimensional network parallel to (110) by O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds.

Piperazine-1,4-diium bis-(3,5-dicarboxy-benzoate).

The asymmetric unit of the title salt, C(4)H(12)N(2) (2+)·2C(9)H(5)O(6) (-), comprises one half of the piperazine-1,4-diium dication lying on an inversion centre and one 3,5-dicarboxy-benzoate anion. In the crystal, the ions are linked into a two-dimensional framework parallel to (101) by N-H⋯O and O-H⋯O hydrogen bonds.

N-Phenyl-N-(prop-2-en-1-yl)benzene-sulfonamide.

In the mol-ecule of the title compound, C(15)H(15)NO(2)S, the dihedral angle between the two phenyl rings is 41.8 (3)°. The S atom has a distorted tetra-hedral environment.

Aqua-(1H-benzimidazole-κN)(pyridine-2,6-dicarboxyl-ato-κO,N,O)copper(II) 0.75-hydrate.

The title complex, [Cu(C(7)H(3)NO(4))(C(7)H(6)N(2))(H(2)O)]·0.75H(2)O, consists of discrete monomeric units. The Cu(II) atom is coordinated by two carboxyl-ate O atoms and the N atom from a dipicolinate unit and by an N atom from a benzimidazole ligand.

Tris(2-ethyl-1H-imidazole-κN)(terephthalato-κO)zinc(II).

The title compound, [Zn(C(8)H(4)O(4))(C(5)H(8)N(2))(3)], has a neutral monomeric structure in which one terephthalate dianion and three 2-ethyl-1H-imidazole ligands coordinate to the Zn(II) ion in a distorted tetra-hedral geometry. The methyl group of one of the ethyl groups is disordered over two positions with occupancies of 0.66 (2) and 0.

[3,3'-Bis(1-naphthylmethyl)-1,1'-(2,2'-oxy-diethyl-ene)bis-(imidazol-2-yl-idene)]mercury(II) bis-(hexa-fluorido-phosphate) acetonitrile solvate.

In the title compound, [Hg(C(32)H(30)N(4)O)](PF(6))(2)·CH(3)CN, the mercury(II) ion is coordinated by two carbene C atoms [Hg-C = 2.060 (6) and 2.066 (6) Å] and one ether O atom [Hg-O = 2.

4-Benzene-sulfonamido-benzoic acid.

In the mol-ecule of the title sulfonamide compound, C(13)H(11)NO(4)S, the dihedral angle between the planes of the benzene ring and the carboxyl substituent group is 6.7 (4)°. The two aromatic rings are inclined at 45.