Crystal Structure and Conformation Study of 4-N,N-Dimethylamine Benzaldehyde Thiosemicarbazone Derivative

Natarajan, S.; Mathews, Rita; Ponnuswamy, M. N.; Kang, Lin‐Woo

doi:10.1080/15421400903568138

Cited by 10 publications

(3 citation statements)

References 13 publications

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“…Whereas the cobalt ions exhibited uncommon coordination geometry, the preparation of a mononuclear cobalt complex containing a tristhiosemicarbazone moiety resembling the corner of the molecular tetrahedron as another reference material was rigorously pursued. The ligand H DMT , 2-(4-(dimethylamino) benzylidene) hydrazinecarbothioamide, was synthesized according to method described in the literature . The cobalt complex Co- DMT was synthesized in approximately 66% yield by reacting Co(CH 3 COO) 2 ·4H 2 O with ligand H DMT with in DMF.…”

Section: Resultsmentioning

confidence: 99%

“…The ligand HDMT, 2-(4-(dimethylamino) benzylidene) hydrazinecarbothioamide, was synthesized according to method described in the literature. 62 The cobalt complex Co-DMT was synthesized in approximately 66% yield by reacting Co(CH 3 COO) 2 •4H 2 O with ligand HDMT with in DMF. Elemental analysis and powder Xray analysis indicated that the bulk sample consisted of a single pure phase.…”

Section: Resultsmentioning

confidence: 99%

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A Metal–Organic Tetrahedron as a Redox Vehicle to Encapsulate Organic Dyes for Photocatalytic Proton Reduction

et al. 2015

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The design of artificial systems that mimic highly evolved and finely tuned natural photosynthetic systems is a subject of intensive research. We report herein a new approach to constructing supramolecular systems for the photocatalytic generation of hydrogen from water by encapsulating an organic dye molecule into the pocket of a redox-active metal-organic polyhedron. The assembled neutral Co4L4 tetrahedron consists of four ligands and four cobalt ions that connect together in alternating fashion. The cobalt ions are coordinated by three thiosemicarbazone NS chelators and exhibit a redox potential suitable for electrochemical proton reduction. The close proximity between the redox site and the photosensitizer encapsulated in the pocket enables photoinduced electron transfer from the excited state of the photosensitizer to the cobalt-based catalytic sites via a powerful pseudo-intramolecular pathway. The modified supramolecular system exhibits TON values comparable to the highest values reported for related cobalt/fluorescein systems. Control experiments based on a smaller tetrahedral analogue of the vehicle with a filled pocket and a mononuclear compound resembling the cobalt corner of the tetrahedron suggest an enzymatic dynamics behavior. The new, well-elucidated reaction pathways and the increased molarity of the reaction within the confined space render these supramolecular systems superior to other relevant systems.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A Metal–Organic Tetrahedron as a Redox Vehicle to Encapsulate Organic Dyes for Photocatalytic Proton Reduction

et al. 2015

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“…[24][25][26][27] The angles around the atom of N1 is 348.1 and dihedral angle between the benzene ring to the thiourea and N,N-bis (2-chloroethyl) amino moiety is 11.28 and 11.67, respectively, strongly confirming that the atom N1 is in sp 2 hybridized state and the both groups are lie in the same plane, due to the presence of hetero p -electron delocalization in the entire molecule. [28] The corresponding torsion angles are given in Table 3. The bond lengths of C5-C6, C5-C10, C7-C8, and C8-C9 in the CEABTSC molecule are 1.402(7), 1.395(7), 1.379(8), and 1.384(8) A , respectively; these lengths are considerably higher than the normal value of 1.37 A .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Structural Characterization, and Biological Application of p-[N,N-bis(2-chloroethyl) Aminobenzaldehyde Thiosemicarbazone and Its Nickel (II) Complex

Sankaraperumal

Shetty

Karthikeyan

2015

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

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New complex of Ni(II) with p-[N,N-bis(2-chloroethyl)]aminobenzaldehyde thiosemicarbazone (CEABTSC) have been synthesized and characterized by elemental analysis, IR, electronic, and 1 H NMR spectroscopy. The crystal structure of the free ligand has been determined by single-crystal X-ray diffraction technique. The compound crystallizes in the Triclinic crystal system with space group P-1, Z D 2, Calculated density D 1.392 mg/m 3 , V D 761.64 (18) A 3 with unit cell parameters a D 8.2847(11) A , a D 99.074 , b D 8.7432(12) A , b D 94.035(7) , c D 11.2423(15) A , g D 107.337 (6) ; final R 1 and wR 2 are 0.0796 and 0.3021, respectively. The crystal structure reveals that the compound exists in the thione form and C12 and C11 are at E configuration to each other with respect to N2-N3 bond. The packing of the molecules in the crystal lattice is stabilized by intramolecular N(3)-H(3). . .S(1) and N(4)-H(4D). . . S(1) hydrogen bonds resulting in the formation of edge fused R 2 2 (8) ring motif. In the complex, thiosemicarbazone ligand is coordinated to nickel through (1:2 complex) SNNS mode. The complex has been tested for their antibacterial activity against various pathogenic bacteria.

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Crystal Structure and Conformation Study of 4-Chlorobenzaldehyde Thiosemicarbazone Derivative

2010

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Crystal Structure and Conformation Study of 4-N,N-Dimethylamine Benzaldehyde Thiosemicarbazone Derivative

Cited by 10 publications

References 13 publications

A Metal–Organic Tetrahedron as a Redox Vehicle to Encapsulate Organic Dyes for Photocatalytic Proton Reduction

A Metal–Organic Tetrahedron as a Redox Vehicle to Encapsulate Organic Dyes for Photocatalytic Proton Reduction

Synthesis, Structural Characterization, and Biological Application of p-[N,N-bis(2-chloroethyl) Aminobenzaldehyde Thiosemicarbazone and Its Nickel (II) Complex

Crystal Structure and Conformation Study of 4-Chlorobenzaldehyde Thiosemicarbazone Derivative

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