Bis[N-(2-pyridylcarbon­yl)pyridine-2-carboximidato]iron(III) perchlorate methanol solvate

In the title complex, [Fe(C12H8N3O2)2]ClO4·CH3OH, the iron(III) ion is surrounded by two tridentate N-(2-pyridyl­carbon­yl)pyridine-2-carboximidate (bpca) ligands and exhib­its a distorted octa­hedral coordination by six bpca N atoms. A classical O—H⋯O hydrogen bond exists between the methanol solvent mol­ecule and the perchlorate anion. Magnetic susceptibility measurements indicated the complex to be in the low-spin state in the temperature range 5–400 K

Topic-based integrator matching for pull request

Pull Request (PR) is the main method for code contributions from the external contributors in GitHub. PR review is an essential part of open source software developments to maintain the quality of software. Matching a new PR for an appropriate integrator will make the PR reviewing more effective. However, PR and integrator matching are now organized manually in GitHub. To make this process more efficient, we propose a Topic-based Integrator Matching Algorithm (TIMA) to predict highly relevant collaborators(the core developers) as the integrator to incoming PRs . TIMA takes full advantage of the textual semantics of PRs. To define the relationships between topics and collaborators, TIMA builds a relation matrix about topic and collaborators. According to the relevance between topics and collaborators, TIMA matches the suitable collaborators as the PR integrator

Bis{4-chloro-N′-[phen­yl(2-pyrid­yl)methyl­idene]benzohydrazidato-κ2 N′,O}cobalt(III) nitrate methanol disolvate

In the title compound, [Co(C19H13ClN3O)2]NO3·2CH3OH, the central CoIII atom in the cation is surrounded by two tridentate ligands in a distorted octa­hedral fashion by four N and two O atoms. Classical O—H⋯O hydrogen bonds link both methanol solvent mol­ecules with the nitrate anion

Poly[[chloridodimethanol(μ3-pyridine-2,3-dicarboxyl­ato)europium(III)] methanol monosolvate]

The asymmetric unit of the title compound, {[Eu(C7H3NO4)Cl(CH3OH)2]·CH3OH}n, contains one EuIII ion, one pyridine 2,3-dicarboxylate dianion (PDC), two CH3OH mol­ecules coordinating to the metal atom, one coordinating chloride and one lattice occluded CH3OH mol­ecule. In the crystal, each PDC anion coordinates to three adjacent EuIII ions by the pyridine N and O atoms of the carboxyl­ate groups. The EuIII cation is eightfold coordinated by four carboxyl­ate O atoms, one pyridine N atom, two MeOH and one chloride anion in the form of a distorted polyhedron. Extended coordination of the PDC ligand lead to the formation of a two-dimensional coordination polymer parallel to (10-1)

Bis[4-chloro-N′-(2-pyridyl­methyl­idene)benzohydrazidato]cobalt(III) nitrate sesquihydrate

In the title compound, [Co(C13H9ClN3O)2]NO3·1.5H2O, the central Co3+ atom in the cation is coordinated by four N and two O atoms from the two tridentate ligands in a distorted octa­hedral fashion. In the crystal, the cobalt complex cations are linked to the half-occupied and the fully occupied water mol­ecules, and the nitrate anion via classical inter­molecular O—H⋯O and O—H⋯N hydrogen bonds and weak C—H⋯O contacts