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Author

K. Ravichandran

Bio: K. Ravichandran is an academic researcher from University of Madras. The author has contributed to research in topics: Ring (chemistry) & Piperidine. The author has an hindex of 3, co-authored 17 publications receiving 32 citations.

Papers
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Journal ArticleDOI
TL;DR: In the title compound, [CoCl(C2H8N2)2(C7H9N)]Cl2·0.5H2O, there are two crystallographically independent cations and anions and one water molecule in the asymmetric unit.
Abstract: In the title compound, [CoCl(C2H8N2)2(C7H9N)]Cl2·0.5H2O, there are two crystallographically independent cations and anions and one water mol­ecule in the asymmetric unit. Both CoIII ions are bonded to two chelating ethylenediamine ligands, one benzylamine molecule and one chloride ion. The crystal packing is through N—H⋯O, N—H⋯Cl and O—H⋯Cl inter­actions.

11 citations

Journal ArticleDOI
TL;DR: In the title compound, [CoCl(C2H8N2)2(C7H9N)]Cl2·H2O, the CoIII ion has a distorted octahedral coordination environment and is surrounded by four N atoms in an equatorial plane, with the other N and Cl atoms occupying the axial positions.
Abstract: In the title compound, [CoCl(C2H8N2)2(C7H9N)]Cl2·H2O, the CoIII ion has a distorted octa­hedral coordination environment and is surrounded by four N atoms in an equatorial plane, with the other N and Cl atoms occupying the axial positions. The crystal packing is stabilized by N—H⋯O, N—H⋯Cl and O—H⋯Cl inter­actions.

4 citations

Journal ArticleDOI
TL;DR: In the title compound, C21H23NO2, the piperidine ring adopts a distorted boat conformation and the crystal packing is governed by intermolecular C—H⋯O interactions.
Abstract: In the title compound, C26H25NO2, the piperidine ring adopts a distorted boat conformation. The three phenyl rings form dihedral angles of 67.58 (8), 59.82 (8) and 86.41 (8)° with the best plane through the piperidine ring. The crystal packing is governed by inter­molecular C—H⋯O inter­actions.

3 citations

Journal ArticleDOI
TL;DR: In the title compound, C11H9NO2, the quinoline ring system is essentially planar (r.m.s. deviation = 0.005 Å) and the methoxy and aldehyde groups are almost coplanar with it.
Abstract: In the title compound, C11H9NO2, the quinoline ring system is essentially planar (r.m.s. deviation = 0.005 A) and the meth­oxy and aldehyde groups are almost coplanar with it [N—C—O—C = 6.24 (19) and O—C—C—C = 0.3 (2)°]. In the crystal, mol­ecules are linked by pairs of C—H⋯O hydrogen bonds, forming centrosymmetric R22(10) dimers. The dimers are linked via π–π inter­actions involving the pyridine and benzene rings [centroid–centroid distance = 3.639 (1) A].

3 citations

Journal ArticleDOI
TL;DR: In the title compound, C11H12N2O2, a benzodiazepine derivative, the seven-membered ring adopts a distorted boat conformation and the crystal packing is controlled by intermolecular N—H⋯O and C—O interactions.
Abstract: In the title compound, C11H12N2O2, a benzodiazepine derivative, the seven-membered ring adopts a distorted boat conformation. The crystal packing is controlled by inter­molecular N—H⋯O and C—H⋯O inter­actions.

2 citations


Cited by
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Journal ArticleDOI
10 Mar 1970

8,159 citations

Journal ArticleDOI
TL;DR: In this article, three new dyes containing diphenylamine as electron donor, benzene (BIM1), benzothiadiazole (BTD), and N-ethylhexylbenzotriazoles (BTZ) were synthesized in D-A-π-A structure for use in dye-sensitized solar cells.
Abstract: Three new dyes containing diphenylamine as electron donor, benzene (BIM1), benzothiadiazole (BTD) (BIM2) and N-ethylhexylbenzotriazole (BTZ) (BIM3) as auxiliary electron acceptors, quinoline as π-bridge and cyanoacrylic acid as anchoring group were synthesized in D-A-π-A structure for use in dye-sensitized solar cells (DSSCs). The optical, electrochemical, theoretical and photovoltaic methods were performed to understand the auxiliary acceptor influence on the performance of these dyes. Compared to the other dyes, the DSSC with dye BIM3 slightly increases the open circuit voltage (Voc) owing to the retardation of charge recombination by BTZ. However, replacement of benzene or BTZ by BTD unit causes a large red shift of the absorption spectra, leading BIM2 cell to produce the highest short circuit current density (Jsc). Thus, among the three D-A-π-A dyes, BIM2 is determined to be the most efficient dye, which reached a Voc of 0.627 V and Jsc of 11.53 mA cm–2, corresponding to an overall power conversion efficiency of 5.21 % in the presence of chenodeoxycholic acid (CDCA) as the coadsorbent. These results suggest that the insertion of benzothiadiazole as auxiliary acceptor into quinoline-based D-A-π-A dyes can effectively improve photovoltaic performance of DSSCs.

25 citations

Journal ArticleDOI
TL;DR: In this paper, structural integrated cobalt(III) complexes showing interesting surface affinity in the interfacial electron transfer reactions were synthesized by incorporating alkyl amines into the coordination sphere of cis-[CoIII(en)2(RNH2)Cl]Cl2.

14 citations

Journal ArticleDOI
TL;DR: In this article, four novel Dπ-A organic dyes containing quinoline (5a, 5b) and pyridocarbazole (5c, 5d) as the π-spacers have been synthesized for dye-sensitized solar cells.

10 citations

Journal ArticleDOI
TL;DR: In the structure of title compound, C22H20O2N2, the 11-membered benzodiazepine ring system adopts a distorted boat conformation and an intramolecular O—H⋯N hydrogen bond generates an S(6) ring.
Abstract: In the structure of title compound, C22H20O2N2, the 11-membered benzodiazepine ring system adopts a distorted boat conformation. The benzene ring of this system forms dihedral angles of 89.69 (12) and 48.82 (12)° with those of the phenol and methoxy­phenyl substituents, respectively. The dihedral angle between the benzene rings is 49.61 (11)°. An intra­molecular O—H⋯N hydrogen bond generates an S(6) ring.

4 citations