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In this approach, it is introduced a new route to fabricate a reliable and reproducible wet-chemically prepared SrO NRs fabricated glassy carbon electrode sensor probe by electrochemical method for the detection of phenolic derivatives for the safety of environmental and healthcare fields in broad scales.
The title compound, C(21)H(23)N(3)O(4), adopts an E configuration about the central C=N double bond and the pyrazolone ring is almost planar, with a maximum deviation of 0.042 (1) Å. The central pyrazolone ring makes dihedral angles of 51.96 (5) and 3.82 (5)° with the attached phenyl and the trimeth-oxy-substituted benzene rings, respectively. The dihedral angle between the phenyl ring and the trimeth-oxy-substituted benzene ring is 50.19 (5)° and an intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. The crystal structure is stabilized by inter-molecular C-H⋯O and C-H⋯N hydrogen bonds.
Data treatment and determination of the standard heterogeneous rate constant of simple ET process (simple electron transfer) & number of electrons consumed in electrode reaction were carried out via convolution-deconvolution voltammetry and digital simulation methods. The working curves required for determination of the standard heterogeneous rate constant, k s , were constructed and discussed. The number of electrons, n, consumed in electrode reaction was calculated via simple method. The electro-reduction of Pb 2+ was carried out at hanging mercury drop electrode while the redox behaviour of Fe 3+ /Fe 2+ couple was performed at glassy carbon electrode to confirm the validity of the reported method in calculation of k s and n in case of simple ET.
In the mol-ecule of the title compound, C(21)H(16)N(2)O(2), the tetra-hydro-benzo[h]quinoline fused-ring system is buckled owing to the ethyl-ene -CH(2)CH(2)- fragment, the benzene ring and the pyridine ring being twisted by 19.7 (1)°. The 4-substituted aromatic ring is bent away from the pyridine ring by 50.3 (1)° in order to avoid crowding the cyanide substituent. In the crystal, two mol-ecules are linked by a pair of N-H⋯O hydrogen bonds to form a centrosymmetric dimer.
In the title compound, C(16)H(13)ClN(2)S, the dihedral angle between the 4-chloro-benzaldehyde moiety and the heterocyclic five-membered ring is 7.21 (17)°. In the crystal, mol-ecules are linked by weak C-H⋯π inter-actions, generating [100] chains.
The asymmetric unit of the diamine compound, C(18)H(14)F(3)N(2)O(2)S(2), consists of two mol-ecules; the C=C double bond has a Z configuration in the C(4)H(3)S-C=C-C(=O)-C segment. The -NH-CH(2)-CH(2)-NH chain adopts a twisted U-shape. The amino group is an intra-molecular hydrogen-bond donor to the carbonyl group; the intra-molecular hydrogen bond generates a six-membered ring. In both mol-ecules, the thienyl rings are disordered over two positions; the occupancies of the major components are 0.817 (4) and 0.778 (4) in one mol-ecule and 0.960 (4) and 0.665 (4) in the other. One of the trifluoro-methyl groups is disordered over two positions with the major component having 0.637 (8) occupancy.
The present work is aimed to synthesize a novel series of linear polyamides (PAs) 4a–d based on di(thiazolyl-thiophenylidene)cyclyhexanone as well as carries aliphatic and aromatic species in the polymer main backbones. The polymerization process was occurred by solution polycondensation technique by the interaction of the newly synthesized monomer 3 with adepoyl, sebacoyl, terphthaloyl, and isophthaloyldiacid chlorides. Before polymerization, the structure of monomer 3 was confirmed by elemental and spectral analyses. The structures of polymers were also investigated by elemental, spectral analysis, thermal analysis, and Field-Emission Scanning Electron Microscopy (FE-SEM) micrographs. Film draw temperatures for all the polymers were evaluated in the range 509.0–542.3°C. Here, the heavy metallic sensors are developed with the polyamide-fabricated glassy carbon electrode (GCE) by reliable current vs. voltage technique. A thin layer of PA onto GCE was fabricated with conducting coating agents (5% nafion) to fabricate a selective heavy metal ions, Cu2+ sensor in short response time in phosphate buffer phase. The fabricated sensor was also exhibited higher sensitivity, lower detection limit, large dynamic concentration ranges, long-term stability, and improved electrochemical performances toward Cu2+ sensor. The calibration plot is linear (r2: 0.9956) over the large Cu2+ ion concentration ranges (1.0 nM to 10.0 mM). The sensitivity and detection limit is 3.4177 µA cm−2 µM−1 and 0.36 nM (signal-to-noise ratio of 3) respectively. This novel effort is initiated a well-organized way of efficient cationic sensor improvement with conductive polymers for heavy metallic pollutants in environmental and health-care fields in large scales.
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
