(1E,2E)-2-Methyl-3-phenyl­acryl­aldehyde thio­semicarbazone

In the crystal structure of the title compound, C11H13N3S, mol­ecules form centrosymmetric synthons with an R 2 2(8) graph-set motif, linked by pairs of N—H⋯S hydrogen bonds. The synthons are connected through further N—H⋯S hydrogen bonds, extending the packing to form a two-dimensional network lying parallel to (001). In addition, C—H⋯π inter­actions are observed

1-(4-Carb­oxy­butan-2-yl­idene)-4-phenyl­thio­semicarbazide

The mol­ecule of the title compound, C12H15N3O2S, which belongs to the family of thio­semicarbazones, containing an acid group, adopts a semi-closed conformation with an intramolecular N—H⋯N hydrogen bond. In the crystal, molecules are linked by strong N—H⋯O and O—H⋯S hydrogen bonds between the acid group and thiosemicarbazone unit, with one additional intermolecular hydrogen C—H⋯O interaction. These three interactions form R 2 2(8) and a R 2 1(7) rings and the molecules related by the c-glide plane are linked into a zigzag chain along [001]

Green and blue materials for the ceramic industry from pink MgCoxNi1-xSiO4 (0 ≤ x ≤ 1) solid solutions

In this study, MgCoxNi1-xSiO4 (0.0 ≤ x ≤ 1.0) solid solutions with an olivine structure were synthetized via the chemical coprecipitation method and materials with a smaller M(II) (M = Co, Ni) amount than Co2SiO4 and Ni2SiO4 compounds were obtained. At 1200 °C, the Co(II) and Ni(II) were randomly distributed in the MgCoxNi1-xSiO4 (0.0 ≤ x ≤ 1.0) solid solutions with the olivine structure, but the occupation of Co(II) and Ni(II) ions in M1 (4a) octahedral sites was obtained at a higher level than in M2 (4c) octahedral sites. The Mg(II) ions prefer the M2 sites. This preference explains the main contribution of the M1 sites in spectra of octahedral Co(II) ions and the M1-O and M2-O distances jointly explain the pink colour of the MgCoxNi1-xSiO4 (0.0 ≤ x ≤ 1.0) solid solutions, while the colour of Co2SiO4 is blue. Spectra can be interpreted as the sum of Ni(II) and Co(II) ions in octahedral sites. When these solid solutions are enamelled, the pink colouring changes to green or blue because of the presence of tetrahedral Co(II).Funding for open access charge: CRUE-Universitat Jaume

1-(Biphenyl-4-ylmethyl­idene)thio­semicarbazide monohydrate

In the title compound, C14H13N3S·H2O, the thio­semicarbazide group is nearly planar, with a maximum deviation of 0.072 (2) Å from the ideal least-squares plane, and shows an E conformation. In the crystal packing, the water mol­ecules are involved in an extensive inter­molecular N—H⋯O hydrogen-bond network, assisted by O—H⋯S inter­actions, which link the independent mol­ecules into chains extended along b axis. An intra­molecular hydrogen N—H⋯N bond helps to stabilize the mol­ecular conformation

(E)-4-(1,3-Benzodioxol-5-yl)but-3-en-2-one

In the title compound, C11H10O3, the benzodioxole ring adopts a flattened [puckering parameters: q 2 = 0.107 (2) Å, ϕ2 = 160 (1)°] envelope conformation with the methylene C atom as the flap. The crystal packing features chains, parallel to the c axis, composed of dimers connected by weak C—H–O hydrogen bonds and extending in layers in the bc plane

Sonochemical synthesis, characterization, and effects of temperature, power ultrasound and reaction time on the morphological properties of two new nanostructured mercury(II) coordination supramolecule compounds

Two new mercury(II) coordination supramolecular compounds (CSCs) (1D and 0D), [Hg(L)(I)] (1) and [Hg(L')(SCN)]·2HO (2) (L = 2-amino-4-methylpyridine and L' = 2,6-pyridinedicarboxlic acid), have been synthesized under different experimental conditions. Micrometric crystals (bulk) or nano-sized materials have been obtained depending on using the branch tube method or sonochemical irradiation. All materials have been characterized by field emission scanning electron microscope (FESEM), scanning electron microscopy (SEM), powder X-ray diffraction (PXRD) and FT-IR spectroscopy. Single crystal X-ray analyses on compounds 1 and 2 show that Hg ions are 4-coordinated and 5-coordinated, respectively. Topological analysis shows that the compound 1 and 2 have 2C1, sql net. The thermal stability of compounds 1 and 2 in bulk and nano-size has been studied by thermal gravimetric (TG), differential thermal analyses (DTA) for 1 and differential scanning calorimetry (DSC) for 2, respectively. Also, by changing counter ions were obtained various structures 1 and 2 (1D and 0D, respectively). The role of different parameters like power of ultrasound irradiation, reaction time and temperature on the growth and morphology of the nano-structures are studied. Results suggest that increasing power ultrasound irradiation and temperature together with reducing reaction time and concentration of initial reagents leads to a decrease in particle size

(E)-1-[1-(4-Chloro-phen-yl)ethyl-idene]thio-semicarbazide

In the crystal structure of the title compound, C9H10ClN3S, the mol­ecules form chains parallel to [001] through N—H⋯S hydrogen bonds. In addition, weak inter­molecular N—H⋯Cl hydrogen bonds connect the chains, forming a two-dimensional network parallel to (001).Financial support was given by the Agencia Española de Cooperación Inter­nacional y Desarrollo (AECID), FEDER funding and the Spanish MINECO (MAT2006–01997, MAT2010-15094 and Factoría de Cristalización Consolider Ingenio-2010).Peer reviewe

4-(Diphenyl-amino)-benzaldehyde 4-phenyl-thio-semicarbazone

The title mol­ecule, C26H22N4S, is composed of three main parts, viz. a triphenyl­amine group is connected to a phenyl ring by a thio­semicarbazone moiety. The C= N double bond has an E conformation. The crystal packing is dominated by strong hydrogen bonds through the thio­semicarbazone moiety, with pairs of N—H⋯S hydrogen bonds linking the mol­ecules to form inversion dimers with an R22(8) ring motif. An intra­molecular N—H⋯N hydrogen bond is also present, generating an S(5) ring motif. Although the structure contains four phenyl rings, π–π stacking inter­actions are not formed between them, probably due to the conformation adopted by the triphenyl­amine group. However, a weak π–π stacking inter­action is observed between the phenyl ring and the delocalized thio­semicarbazone moiety.Financial support of this work was given by the Agencia Española de Cooperación Inter­nacional y Desarrollo (AECID). The authors also acknowledge FEDER funding and funds from the Spanish MINECO (grant Nos. MAT2006-01997, MAT2010-15094) and Factoría de Cristalización Consolider Ingenio-2010.Peer reviewe