Tetra­aqua­{1-[(1H-1,2,3-benzotriazol-1-yl)meth­yl]-1H-1,2,4-triazole}sulfato­cobalt(II) dihydrate

In the title complex, [Co(SO4)(C9H8N6)(H2O)4]·2H2O, the CoII ion is six-coordinated by one N atom from a 1H-1,2,3-benzotriazol-1-yl)meth­yl]-1H-1,2,4-triazole ligand, one O atom from a monodentate sulfate ligand and four water mol­ecules in a slightly distorted octa­hedral geometry. The sulfate ligand is rotationally disordered over two sets of sites with refined occupancies of 0.662 (15) and 0.338 (15). In the crystal, complex mol­ecules and solvent water mol­ecules are linked through inter­molecular O—H⋯O and O—H⋯N hydrogen bonds into a three-dimensional network

Microscopic Investigation of a Copper Molten Mark by Optical Microscopy (OM) and Atomic Force Microscopy (AFM)

AbstractA wide variety of physical and chemical detecting methods have been proposed for discriminating between and electric arc bead that caused a fire, versus one that was caused by the fire itself. The simplest proposed method claims that examination of the molten marks in a bead under a microscope will suffice to make the distinction. Generally, copper molten marks of the bead are examined by using optical (OM) and scanning electron microscopy (SEM). In this paper, OM and AFM were employed to investigate a molten mark formed in laboratory. AFM observation reveals that AFM could be an auxiliary method to investigate the copper molten mark formed in the fire in order to confirm the reasons of the fire

(±)-5-Ethyl-2-(4-isopropyl-4-methyl-5-oxo-4,5-dihydro-1H-imidazol-2-yl)nicotinic acid

In the title compound, C15H19N3O3, owing to an intra­molecular O—H⋯N hydrogen bond, the pyridine and imidazole rings are nearly coplanar and are twisted from each other by a dihedral angle of only 0.92 (9)°. The mol­ecules are linked through inter­molecular N—H⋯O hydrogen bonding, forming an infinite chain parallel to the b axis