In the title compound, C(8)H(20)N(+)·C(7)H(5)O(3) (-)·H(2)O, the carboxyl-ate group is slightly out of the plane of the parent benzene ring, the C-C-C-O torsion angles being 2.3 (2) and 2.0 (2)°. The carboxyl-ate group and the hy-droxy group form O-H⋯O hydrogen bonds, generating a head-to-tail chain along the b axis. Neighbouring hydrogen-bonded chains are linked by the water mol-ecule, generat...

A mild and efficient method has been developed for the preparation of substituted coumarins from reaction of various phenols with different β-ketoesters via Pechmann condensation in the presence of Brønsted acidic ionic liquid (N-(4-sulfonic acid) butyl triethylammonium hydrogen sulfate) as an effective catalyst under solvent-free conditions. Different phenols reacted with ethyl acetoacetate to...

A mild and efficient method has been developed for the preparation of substituted coumarins from reaction of various phenols with different β-ketoesters via Pechmann condensation in the presence of Brønsted acidic ionic liquid (N-(4-sulfonic acid) butyl triethylammonium hydrogen sulfate) as an effective catalyst under solvent-free conditions. Different phenols reacted with ethyl acetoacetate to...

The title compound, C(13)H(8)Cl(2)N(2)O(2), was obtained by the oxidation of diclofenac {systematic name: 2-[2-(2,6-dichloro-phenyl-amino)-phen-yl]acetic acid}, an anti-inflammatory drug, with hydrogen peroxide catalysed by chlorido[5,10,15,20-tetra-kis-(2,6-dichloro-phen-yl)porphyrinato]manganese(III), using ammonium acetate as co-catalyst. The asymmetric unit contains two crystallographically...

Liquid-phase exfoliation of two-dimensional materials is very attractive for large-scale applications. Although used extensively, isolating MoS2 layers (<10) with high efficiency reported to be extremely difficult. Further, the importance soaking has not yet been studied and surfactants’ role in stabilizing nanosheets poorly understood (Grayfer et al., 2017) [1]. Herein, we report a novel appro...

The reaction of cobalt(II) sulfate and 2-amino-pyrazine affords the title salt, [Co(H(2)O)(6)][Co(C(4)H(5)N(3))(2)(H(2)O)(4)](SO(4))(2)·2H(2)O. The metal atoms in the tetra-aqua-coordinated and hexa-aqua-coordinated complex cations lie on centers of inversion in slightly distorted octa-hedral geometries. The cations, anions and solvent water mol-ecules are linked by O-H⋯O, O-H⋯N and N-H⋯O hydro...

The reaction of manganese(II) sulfate and 2-amino-pyrazine affords the title salt, [Mn(H(2)O)(6)][Mn(C(4)H(5)N(3))(2)(H(2)O)(4)](SO(4))(2)·2H(2)O. The metal atoms in the tetra-aqua-coordinated and hexa-aqua-coordinated cations lie on centers of inversion in octa-hedral geometries. The cations, anions and solvent water mol-ecules are linked by O-H⋯O, N-H⋯O and O-H⋯N hydrogen bonds into a three-d...

The title complex, [Fe(C(6)H(4)N(5))(2)(H(2)O)(2)], was synthesized by the reaction of ferrous sulfate with 5-(2-pyrid-yl)-2H-tetra-zole (HL). The Fe(II) atom, located on a crystallographic center of inversion, is coordinated by four N-atom donors from two planar trans-related deprotonated L ligands and two O atoms from two axial water mol-ecules in a distorted octa-hedral geometry. The Fe(II) ...

The asymmetric unit of the title complex, [Sn(4)(C(4)H(9))(8)(C(11)H(14)NO(2))(4)O(2)], consists of two crystallographically independent half-mol-ecules. The other halves are generated by crystallographic inversion centers. In each tetra-nuclear mol-ecule, both of the two independent Sn atoms are five-coordinated, with distorted trigonal-bipyramidal SnC(2)O(3) geometries. One Sn atom is coordin...