The whole mol-ecule of the title compound, [NiCl2(C3H4N2)2(NH3)2], is generated by inversion symmetry. The Ni(II) ion, which is located on an inversion center, has a distorted octa-hedral coordination environment and is surrounded by two ammine N atoms and two Cl atoms in the equatorial plane, with two N atoms of two imidazole groups occupying the axial positions. The imidazole ring makes a dihedral angle of 81.78 (18)° with the Ni/N/Cl equatorial plane. In the crystal, mol-ecules are linked via N-H⋯Cl hydrogen bonds and C-H⋯π inter-actions, forming a three-dimensional network.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3772436 | PMC |
| http://dx.doi.org/10.1107/S1600536813016747 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Animal and vegetal materials of mouse oocytes segregate at first zygotic cleavage: a simple mechanism that makes the two-cell blastomeres differ reciprocally from the start.
Mol Hum Reprod
January 2025
Department of Cell and Tissue Dynamics, Max Planck Institute for Molecular Biomedicine, Münster, Germany.
Recent advances in embryology have shown that the sister blastomeres of two-cell mouse and human embryos differ reciprocally in potency. An open question is whether the blastomeres became different as opposed to originating as different. Here we wanted to test two relevant but conflicting models: one proposing that each blastomere contains both animal and vegetal materials in balanced proportions because the plane of first cleavage runs close to the animal-vegetal axis of the fertilized oocyte (meridional cleavage); and the other model proposing that each blastomere contains variable proportions of animal and vegetal materials because the plane of the first cleavage can vary - up to an equatorial orientation - depending on the topology of fertilization.
View Article and Find Full Text PDFFine-Tuning the Anisotropies of Air-Stable Single-Molecule Magnets Based on Macrocycle Ligands.
Inorg Chem
January 2025
School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China.
Air-stable single-molecule magnets (SMMs) can be obtained by confining Dy ion in a coordination environment; however, most of the current efforts were focused on modifying the rigidity of the macrocycle ligand. Herein, we attempt to assemble air-stable SMMs based on macrocycles with a replaceable coordination site. By using an in situ 1 + 1 Schiff-base reaction of dialdehyde with diamine, three air-stable SMMs have been obtained in which one of the equatorial coordination sites can be varied from -NH- (for ), -O- (for ), and -NMe- (for ).
View Article and Find Full Text PDFCrystal structure of -poly[bis-(,-di-methyl-hydroxyl-ammonium) [di-μ-bromido-di-bromido-stannate(II)]].
Acta Crystallogr E Crystallogr Commun
January 2025
Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine.
The title compound, {(CHNO)[SnBr]} , is a layered hybrid perovskite crystallizing in the monoclinic space group 2/. The asymmetric unit consists of one HC-O-NH -CH cation (MeHA), one Sn atom located on a twofold rotation axis, and two Br atoms. The Sn atom has a distorted octa-hedral coordination environment formed by the bromido ligands.
View Article and Find Full Text PDFTurbulence in the tropical stratosphere, equatorial Kelvin waves, and the quasi-biennial oscillation.
Proc Natl Acad Sci U S A
January 2025
Laboratoire de Météorologie Dynamique/Institut Pierre Simon Laplace, École Normale Supérieure- Paris Sciences et Lettres Université, École Polytechnique- Institut Polytechnique de Paris, Sorbonne Université, CNRS, Paris 91128, France.
The tropical stratosphere is the gateway to the global stratosphere and a commonly proposed location for solar geoengineering. The dynamics of this remote and difficult to observe region are poorly understood, particularly at turbulent length scales. Existing observational estimates of turbulence frequency and strength vary widely.
View Article and Find Full Text PDFNonocclusive Ablation Technique Using a Novel Cryoballoon for Failed Left Superior Pulmonary Vein Isolation Despite Complete Occlusion.
Pacing Clin Electrophysiol
January 2025
Department of Cardiovascular Medicine, Institute of Science Tokyo, Bunkyo-ku, Tokyo, Japan.
Article Synopsis
- This study examines factors influencing the failure of left superior pulmonary vein (LSPV) isolation during cryoballoon (CB) procedure, even when complete occlusion is achieved.
- Researchers analyzed 300 patients undergoing ablation, identifying two groups based on their LSPV isolation results: those needing additional freezing (Group A) and those only needing complete occlusion (Group B).
- Key findings show that Group A had larger LSPV diameters, higher left atrial volumes, and different freezing conditions, suggesting the importance of balloon positioning for effective isolation in challenging cases.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!