Studies on cluster, salt and molecular complex of zinc-quinolinate

Khakhlary, Prithiviraj; Baruah, Jubaraj B.

doi:10.1007/s12039-015-0781-6

Cited by 14 publications

(8 citation statements)

References 41 publications

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“…[21] Such interactions are favourable when confinement of an anion within a p-cloud [8] is done or an anion is brought to close proximity of a p-cloud by supporting interactions. [11] In the present case we observed that oxide and chloride ions are in close proximity to have very weak O4…Cl3 interactions as shown in Figure 2d. Chlorine…oxygen interactions [22] in organic compounds is an important interaction; but observed distances between the Cl3…O4 are much larger in present cases.…”

Section: Resultssupporting

confidence: 65%

“…Thus, polynuclear metal cores may provide a platform for organised spatial arrangements to act as templates for pstacking [10] or anion-p [9] interactions to help in fluorescence signal transductions. [11] Hence, we have chosen easily available mixed valent oxido-bridged cobalt Co4O4 core [12][13][14] to hinge 1,10-phenanthroline (phen) or 2,2'-bipyridine (bpy) (Figure 1a) in orderly manner to explore binding abilities with nitroaromatics. Depending on ligands, such complexes may adopt butterfly, [15] cubane, [16] dicubane, [16] incomplete cubane [17] and defect cubane [17] geometries.…”

Section: Introductionmentioning

confidence: 99%

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Tetranuclear Cobalt Complexes as Nano-Dimensional Template for Inclusion of Nitrophenols

Shankar

Baruah

2016

ChemistrySelect

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Htea = dianion of triethanolamine, bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline) having tetranuclear cations with end to end distance~1.69 nm and~1.62 nm respectively were characterized. These complexes are weakly fluorescent in sol-ution and fluorescence of respective complexes decreases upon interactions with nitrophenols. Complexes from reactions of 1 and 2 with nitrophenols were isolated and structurally characterized. They also show lower fluorescence in solid state than respective parent complex due to oxygen-p interactions. Complex 2 underwent cation exchange to form new tetranuclear oxido cobalt complexes possessing [MCl 4 ] 2À ( M= Zn or Cd) anion.

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Section: Resultssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Tetranuclear Cobalt Complexes as Nano-Dimensional Template for Inclusion of Nitrophenols

Shankar

Baruah

2016

ChemistrySelect

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“…In this XRD pattern, the broad band in the range of 2θ = 16.3°, 30.1°, which contains some Hal peak is ascribed to the amorphous caffeine 29 . According to the literature, it is expected that characteristic peaks of ZnCl 3 − /ZnCl 4 − appear at 2θ = 36.6°, 38.7° [30][31][32] that overlapped with the Hal peaks. The comparison of the two XRD patterns, not only con rms IL conjugation, but also approves stability of Hal upon functionalization with IL.…”

Section: Hal-il Structurementioning

confidence: 99%

Clay-supported bio-based Lewis acid ionic liquid as a potent catalyst for the dehydration of fructose to 5- hydroxymthylfurfural

Yaghoubi,

Sadjadi,

Zhong

et al. 2023

Preprint

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Caffeine and halloysite nanoclay mineral were used as bio-based compounds to synthesize a novel Lewis acid heterogeneous catalyst. To prepare the catalyst, halloysite was functionalized with 2,4,6-trichloro-1,3,5-triazine and reacted with caffeine. Caffeine was then converted to ionic liquid via a reaction with ZnCl2. The catalyst was characterized using SEM/EDS/mapping, FTIR, TGA, XRD, BET and applied for promoting the dehydration of fructose to 5-hydroxymthylfurfural. To investigate the effects of the reaction variables, response surface methodology was used. The product was achieved in 98.5% in 100 min using a catalyst loading of 30 wt% at 100°C. Moreover, the catalyst was highly recyclable and stable. Comparison of the catalytic activity of the catalyst with that of halloysite and a control catalyst with one caffeine-based Lewis acid ionic liquid confirmed the superior activity of the former and the important role of 2,4,6-trichloro-1,3,5-triazine for increasing the number of the grafted caffeine and thus the acidic sites of the catalyst. A plausible reaction mechanism was proposed, and the activity of the catalyst for other carbohydrates was also studied. According to the results, this catalyst catalyzed the reaction of other substrates to furnish 5-hydroxymthylfurfural in low to moderate yields.

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“…Hence, there is a possibility to solve this problem to prepare the semi-organic crystals which combine the positive features of inorganic and organic compounds causing good physical properties [25] Zinc is one of the most abundant metals in the human body, and it plays an important and indispensable role in biological systems [26]. In addition, the basic zinc hybrids have proved physical properties [27][28];…”

Section: Introductionmentioning

confidence: 99%

Characterization of New Inorganic- Organic Hybrid Compounds: (C6H10N2).Cl2 (I), [C6H10N2]2ZnCl4 (II): Crystal Structure, Hirschfield Surface, IR and NMR spectroscopy Analysis.

Hannachi

Hlel

2021

Preprint

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Two new organic-inorganic hybrid materials, (C6H10N2).Cl2 (I) and [C6H10N2]2ZnCl4 (II), have been synthesized by hydrothermal method and characterized by single-crystal X-ray diffraction and XRD pattern investigations. These two compounds are crystallized in the monoclinic system; C2/c space group. In the both structures, the anionic-cationic entities are interconnected by hydrogen bonding contacts and p-p Interaction forming three-dimensional networks. Intermolecular interactions were investigated by Hirshfeld surfaces and the contacts of the four different chloride atoms in (II) were compared. The vibrational absorption bands were identified by infrared spectroscopy. These compounds were also investigated by solid state 13C NMR spectroscopy.

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Studies on cluster, salt and molecular complex of zinc-quinolinate

Cited by 14 publications

References 41 publications

Tetranuclear Cobalt Complexes as Nano-Dimensional Template for Inclusion of Nitrophenols

Tetranuclear Cobalt Complexes as Nano-Dimensional Template for Inclusion of Nitrophenols

Clay-supported bio-based Lewis acid ionic liquid as a potent catalyst for the dehydration of fructose to 5- hydroxymthylfurfural

Characterization of New Inorganic- Organic Hybrid Compounds: (C6H10N2).Cl2 (I), [C6H10N2]2ZnCl4 (II): Crystal Structure, Hirschfield Surface, IR and NMR spectroscopy Analysis.

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