4,4′-(Ethene-1,2-diyl)dipyridinium bis­[4-(2-carboxy­benzo­yl)benzoate]

In the crystal structure of the title compound, C12H12N2 2+·2C15H9O5 −, the cation has site symmetry with the mid-point of C=C bond located on an inversion center. The two benzene rings of the anion are oriented at a dihedral angle 85.87 (6)°. In the crystal, inter­molecular O—H⋯O and N—H⋯O hydrogen bonds link the cations and anions into supra­molecular double chains, which are further connected into a three-dimensional network through inter­molecular C—H⋯O and π–π stacking between parallel pyridine rings [centroid–centroid distance = 3.4413 (12)Å] and between parallel benzene rings [centroid–centroid distance = 3.6116 (14)Å]

Aqua­(2,2′-bipyrimidine-κ2 N,N′)(succin­ato-κ2 O 1,O 4)copper(II) dihydrate

In the crystal structure of the title compound, [Cu(C4H4O4)(C8H6N4)(H2O)]·2H2O, the CuII atom is chelated by a 2,2′-bipyrimidine (bpm) ligand and a succinate anion in the basal plane; a water mol­ecule in the apical position completes the slightly distorted square-pyramidal coordination geometry. Another carboxyl­ate O atom from an adjacent complex is located in the opposite apical direction, with a Cu⋯O distance of 2.706 (3) Å, and is not considered as a bridging atom. Extensive O—H⋯O and O—H⋯N hydrogen bonding is present in the crystal structure

catena-Poly[[(2-amino-1,3-benzothia­zole-6-carboxyl­ato-κ2 O,O′)(2,2′-bipyridyl-κ2 N,N′)cadmium]-μ-2-amino-1,3-benzothia­zole-6-carboxyl­ato-κ3 N 1:O,O′]

In the title coordination polymer, [Cd(C8H5N2O2S)2(C10H8N2)]n, the CdII ion is coordinated by a bidentate 2,2-bipyridyl ligand, two O,O′-chelating 2-amino-1,3-benzothia­zole-6-carboxyl­ate (ABTC) ligands and one N-bonded ABTC ligand. The resulting CdN3O4 coordination polyhedron approximates to a very distorted penta­gonal bipramid with one O and one N atom in axial positions. One of the ABTC ligands is bridging to an adjacent metal atom, generating an infinite chain propagating in [100]. A three-dimensional network is constructed from N—H⋯O and N—H⋯N hydrogen bonds and aromatic π–π stacking inter­actions [centroid–centroid separations = 3.641 (2) and 3.682 (3) Å]

Aqua­bis(2-amino-1,3-thia­zole-4-acetato-κ2 O,N 3)nickel(II)

In the crystal structure of the title compound, [Ni(C5H5N2O2S)2(H2O)], the NiII cation is located on a twofold rotation axis and chelated by two 2-amino-1,3-thia­zole-4-acetate (ata) anions in the basal coordination plane; a water mol­ecule located on the same twofold rotation axis completes the distorted square-pyramidal coordination geometry. Inter­molecular O—H⋯O and N—H⋯O hydrogen bonding, as well as π–π stacking between parallel thia­zole rings [centroid–centroid distance 3.531 (8) Å], helps to stabilize the crystal structure

Molecular cloning and characterization of a novel Cys2/His2-type zinc finger protein gene from chrysanthemum

A novel member of the Cys2/His2-type zinc finger protein gene family, designated DgZFP3, was isolated from chrysanthemum by rapid amplification of cDNA ends (RACE). The DgZFP3 encodes a protein of 248 amino acids, including two conserved Cys2/His2-type zinc finger motifs with a plant-specific QALGGH motif in each zinc finger domain, a B-box (KXKRSKRXR) domain in the N-terminal region as a putative nuclear localization signal (NLS), a L-box (EXEXXAXCLXXL) and an EAR-box (DLNL) at C-terminus. Subcellular localization showed the presence of DgZFP3 in the nucleus. The transcript of DgZFP3 was enriched in roots and leaves than in stems and flowers of the adult chrysanthemum plants. Expression patterns revealed that DgZFP3 was strongly induced by NaCl, drought, cold and abscisic acid (ABA) treatment in the seedlings. We argued that DgZFP3 is a new member of the Cys2/His2-type zinc finger protein gene family, and it may be involved in the plant responses to various stresses.Keywords: Chrysanthemum, DgZFP3, gene expression, Cys2/His2-type zinc finger protei

Pyrolyzing soft template-containing poly(ionic liquid) into hierarchical N-doped porous carbon for electroreduction of carbon dioxide

Heteroatom-doped carbon materials have demonstrated great potential in the electrochemical reduction reaction of CO2 (CO2RR) due to their versatile structure and function. However, rational structure control remains one challenge. In this work, we reported a unique carbon precursor of soft template-containing porous poly(ionic liquid) (PIL) that was directly synthesized via free-radical self-polymerization of ionic liquid monomer in a soft template route. Variation of the carbonization temperature in a direct pyrolysis process without any additive yielded a series of carbon materials with facile adjustable textural properties and N species. Significantly, the integration of soft-template in the PIL precursor led to the formation of hierarchical porous carbon material with a higher surface area and larger pore size than that from the template-free precursor. In CO2RR to CO, the champion catalyst gave a Faraday efficiency of 83.0% and a current density of 1.79 mA?cm?2 at ?0.9 V vs. reversible hydrogen electrode (vs. RHE). The abundant graphite N species and hierarchical pore structure, especially the unique hierarchical small-/ultra-micropores were revealed to enable better CO2RR performance