Coordination chemistry with pyridine/pyrazine amide ligands. Some noteworthy results

Rajput, Amit; Mukherjee, Rabindranath

doi:10.1016/j.ccr.2012.03.024

Cited by 92 publications

(47 citation statements)

References 90 publications

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“…13 10 (C 8,12 ), 127.57 (C 3,5 ), 127.78 (C 2,6 ), 128.79 (C 9,11 ), 133.59 (C 1 ), 140.16 (C 7 ), 143.92 (C 4 ), 167.00 (C@O).…”

Section: General Procedures For the Synthesis Of Amidopropylsilanesmentioning

confidence: 99%

“…The reactants used were as follows: 2d ( 13 The reactants used were as follows: 2d (1.00 ml, 3.52 mmol), tris(isopropanol)amine (0.67 ml, 3.52 mmol). Yield: 1.00 g, 2.63 mmol, 75%.…”

Section: General Procedures For the Synthesis Of Amidopropylsilatranesmentioning

confidence: 99%

“…Amide group constructed on heterocyclic bases like pyridine, pyrazine, etc. constitutes the burgeoning class of ligand scaffold which binds metal ions very efficiently [13]. The utilization of amide functionality to generate novel amidopropylsilanes has gained importance owing to their applications in heterogeneous catalysis, dye sensitized solar cells, photoelectrochemical cells and as metal organic frameworks for the detection of heavy metals like Pd and Hg [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…Si). 1 H NMR (300 MHz, CDCl 3 , 25°C): d = 0.46 (m, 2H, SiCH 2 ), 1.10 (m, 9H, CH 3 ), 1.68 (m, 2H, CCH 2 C), 2.83 (m, 6H, NCH 2 ), 3.41 (m, 2H, CH 2 NH), 4.03 (m, 3H, OCH),8.53 (m, 1H, H 4 ), 8.69 (t, 1H, H 3 , J = 7.8 Hz), 9.36 (d, 1H, H 2 , J = 4.7 Hz) 13. C NMR (75 MHz, CDCl 3 , 25°C): d = 12.71 (SiCH 2 ), 21.21 (CH 3 ), 23.18 (CCH 2 C), 41.69 (CH 2 NH), 61.02 (NCH 2 ), 65.07 (OCH), 142.85 (C 4 ), 143.45 (C 2 ), 144.66 (C 1 ), 147.05 (C 3 ), 162.56 (C@O).…”

mentioning

confidence: 98%

See 3 more Smart Citations

Amide-tethered organosilatranes: Syntheses, structural characterization and photophysical properties

Singh

Rani

Saroa

et al. 2015

Inorganica Chimica Acta

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“…13 10 (C 8,12 ), 127.57 (C 3,5 ), 127.78 (C 2,6 ), 128.79 (C 9,11 ), 133.59 (C 1 ), 140.16 (C 7 ), 143.92 (C 4 ), 167.00 (C@O).…”

Section: General Procedures For the Synthesis Of Amidopropylsilanesmentioning

confidence: 99%

“…The reactants used were as follows: 2d ( 13 The reactants used were as follows: 2d (1.00 ml, 3.52 mmol), tris(isopropanol)amine (0.67 ml, 3.52 mmol). Yield: 1.00 g, 2.63 mmol, 75%.…”

Section: General Procedures For the Synthesis Of Amidopropylsilatranesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 98%

See 2 more Smart Citations

Amide-tethered organosilatranes: Syntheses, structural characterization and photophysical properties

Singh

Rani

Saroa

et al. 2015

Inorganica Chimica Acta

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“…Since the properties of such complexes are heavily influenced by the nature of the ligands [10], much attention has been given to the design and synthesis of chelating ligands. Tridentate Schiff base ligands often exhibit versatile chelating modes, such as NNN, NNO, NNS and ONO [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Transition metal complexes of a dihydroquinazoline-containing ligand: synthesis, crystal structures and physical properties

Shen

Huang

et al. 2015

Transition Met Chem

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A series of transition metal(II) complexes of the type [M(PPQ) 2 ] [PPQ = 2-pyridine-2-yl-3(pyridine-2-methylene-amino)quinazolin-4(3H)-one, M = Co(II), Cu(II), Ni(II), Zn(II), Cd(II)] have been prepared and characterized by IR spectroscopy, elemental analyses and X-ray crystal diffraction. The crystal structure studies revealed diverse coordination behavior of PPQ toward different metal ions, acting as an NNO donor in the cobalt(II) and zinc(II) complexes, but an NNN and NNO mixed donor in the copper(II) and nickel(II) complexes. The metal center generally has an octahedral coordination geometry with the tridentate PPQ ligand, except for the Cd(II) complex in which two PPQ ligands and a nitrate are coordinated (N 4 O 4 ), forming a distorted triangular dodecahedron. The thermal stabilities, luminescence and magnetic properties of these complexes have been studied.

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Synthesis and structural characterization of diorganotin(IV) complexes with a tridentate N‐heterocyclic podand ligand and investigation of their catalytic activity in Baeyer–Villiger oxidation of cyclic ketones to lactones

Basu Baul,

Khatiwara,

Addepalli

et al. 2023

Applied Organom Chemis

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Diorganotin(IV) complexes of composition [Me2SnL] (1), [n‐Bu2SnL] (2), and [Bz2SnL] (3) were synthesized by reacting the N2,N6‐di(pyridin‐2‐yl)pyridine‐2,6‐dicarboxamide pro‐ligand (H2L, where H2 denotes the two acidic protons) with Me2SnO, n‐Bu2SnO, and Bz2SnO, respectively, in refluxing toluene. The amide ligand leads to highly stable diorganotin(IV) complexes via the dianionic tridentate donor set (Npy, N−, N−) with pendent pyridine arms, and the coordination domain is completed by the respective two alkyl ligands. Solution‐state structures of the compounds 1–3 were studied by 1H, 13C, and 119Sn nuclear magnetic resonance (NMR) spectroscopy, revealing that the complexes adopt a five‐coordinate structure in non‐coordinating solvent. Additionally, homogenity and purity of the bulk materials of 1–3 were judged using the high‐resolution mass spectrometry in acetonitrile solution. The molecular and crystal structures of 1·0.5C6H6, 2, and 3 in the solid phase were established by single‐crystal X‐ray diffraction analysis. For all three compounds, the core defined by the rigid tridentate pyridine dicarboxamide ligand and the Sn‐coordinating C atoms adopts nearly C2v symmetry and thus matches none of the most popular geometries for five‐coordinated species, namely square‐pyramidal or trigonal‐bipyramidal coordination. Thermogravimetric analysis (TGA) was performed to probe the thermal stabilities of 1–3. The results serve as a basis for designing highly efficient diorganotin(IV) mimics for catalytic applications. Catalytic studies of ε‐caprolactone formation via Baeyer–Villiger oxidation of cyclohexanone with aqueous H2O2 were performed under microwave (MW) irradiation. The consequences of several reaction parameters like catalyst quantity, time, temperature, and solvent were studied.

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Coordination chemistry with pyridine/pyrazine amide ligands. Some noteworthy results

Cited by 92 publications

References 90 publications

Amide-tethered organosilatranes: Syntheses, structural characterization and photophysical properties

Amide-tethered organosilatranes: Syntheses, structural characterization and photophysical properties

Transition metal complexes of a dihydroquinazoline-containing ligand: synthesis, crystal structures and physical properties

Synthesis and structural characterization of diorganotin(IV) complexes with a tridentate N‐heterocyclic podand ligand and investigation of their catalytic activity in Baeyer–Villiger oxidation of cyclic ketones to lactones

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