2-Chloro­pyrimidin-4-amine

In the title pyrimidine derivative, C4H4ClN3, the 2-chloro and 4-amino substituents almost lie in the mean plane of the pyrimidine ring, with deviations of 0.003 (1) Å for the Cl atom, and 0.020 (1) Å for the N atom. In the crystal, molecules are linked via pairs of N—H⋯N hydrogen bonds, forming inversion dimers. These dimers are further linked via N—H⋯N hydrogen bonds, forming an undulating two-dimensional network lying parallel to (100)

Tetrahedral zinc in tetrakis(1-methyl-1H-imidazole-kappa N-3)zinc bis(tetrafluoridoborate)

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Distortion Isomerism of Cu(II) Chloride Adducts with Bis(2-benzimidazolyl)ethane. Synthesis, Characterization, X-ray Structures and Spectroscopy of Four Different Isomers

Metals in Catalysis, Biomimetics & Inorganic Material

A dinuclear end-on azide-bridged copper(II) compound with weak antiferromagnetic interaction-Synthesis, characterization, magnetism and X-ray structure of bis[(μ-azido-κN1)-(azido-κN1)(1,3-bis(benzimidazol- 2-yl)-2-methylpropane)copper(II)]

The centrosymmetric dinuclear compound of formula [Cu(μ-N 3-κN1)(N3-κN1)(bbmp)]2 is reported. Synthesis, characterization, physical properties are determined in detail, together with its 3D structure. The dinuclear end-on azide-bridged copper(II) compound displays a weak antiferromagnetic interaction, despite the fact that the magnetic orbitals overlap. The Cu-Cu contact distance is 3.1867(8) Å, while the Cu-Nazide-Cu angle is 103.41(14)°. The IR spectra of the azido ligands are as expected for such coordinated azides. © 2012 Elsevier B.V. All rights reserved.The work described in this paper was supported by the Leiden University Study group WFMO (Werkgroep Fundamenteel MaterialenOnderzoek). JR thanks King Saud University for a Distinguished Scientist Fellowship.Peer Reviewe