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Musza K, Mészáros R, Baán K, Kónya Z, Kukovecz Á, Pálinkó I, Sipos P, Szabados M. Mechanochemical preparation of NiCuSn nanoparticles and composites in presence of cetyltrimethylammonium bromide (CTAB) and the catalytic application of the products in homocoupling and hydration of terminal alkynes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mokhtar M, Alzhrani G, Aazam ES, Saleh TS, Al-Faifi S, Panja S, Maiti D. Synergistic Effect of NiLDH@YZ Hybrid and Mechanochemical Agitation on Glaser Homocoupling Reaction. Chemistry 2021; 27:8875-8885. [PMID: 33848016 DOI: 10.1002/chem.202100018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Indexed: 12/15/2022]
Abstract
Herein, we report the synthesis of nickel-layered double hydroxide amalgamated Y-zeolite (NiLDH@YZ) hybrids and the evaluation of the synergistic effect of various NiLDH@YZ catalysts and mechanochemical agitation on Glaser homocoupling reactions. Nitrogen adsorption-desorption experiments were carried out to estimate the surface area and porosity of NiLDH@YZ hybrids. The basicity and acidity of these hybrids were determined by CO2 -TPD and NH3 -TPD experiments respectively and this portrayed good acid-base bifunctional feature of the catalysts. The NiLDH@YZ-catalyzed mechanochemical Glaser coupling reaction achieved best yield of 83 % for the 0.5NiLDH@0.5YZ hybrid after 60 min of agitation, which revealed the highest acid-base bifunctional feature compared to all the investigated catalysts. The developed catalyst has proven itself as a robust and effective candidate that can successfully be employed up to four catalytic cycles without significant loss in catalytic activity, under optimized reaction conditions. This work demonstrated a new strategy for C-C bond formation enabled by the synergy between mechanochemistry and heterogeneous catalysis.
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Affiliation(s)
- Mohamed Mokhtar
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ghalia Alzhrani
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Elham S Aazam
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Tamer S Saleh
- Chemistry Department, Faculty of Science, University of Jeddah, P.O. Box 80329, Jeddah, 21589, Saudi Arabia
| | - Sulaiman Al-Faifi
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Subir Panja
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
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Nasibipour M, Safaei E, Masoumpour MS, Wojtczak A. Ancillary ligand electro-activity effects towards phenyl acetylene homocoupling reaction by a nickel(ii) complex of a non-innocent O-amino phenol ligand: a mechanistic insight. RSC Adv 2020; 10:24176-24189. [PMID: 35516191 PMCID: PMC9055111 DOI: 10.1039/d0ra04362a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 05/27/2020] [Indexed: 11/21/2022] Open
Abstract
A new Ni(ii) complex, was synthesized from the reaction of a non-innocent o-aminophenol ligand, and Ni(OAc)2. The crystal structure of NiIIL2NIS (in which, IS stands for iminosemiquinone radical ligand with cyanide (shown by N in NIS) substituent on phenolate rings) exhibits the square planar environment of Ni(ii). The complex has been crystalized in the monoclinic system and Ni(ii) was surrounded by two oxygen and two nitrogen atoms of two ligands. Variable-temperature magnetic susceptibility measurement for crystalline samples of complex shows the effective magnetic moment per molecule (μeff) of near zero and the diamagnetic nature of the complex (S = 0) which emphasize that strong antiferromagnetic coupling prevailed between the two unpaired electrons of LNIS ligands and Ni(ii) high spin electrons. The complex is EPR silent which confirms the diamagnetic character of the Ni(ii) complex. Electrochemical measurement (CV) indicates the redox-active character of ligand and metal. NiIIL2NIS complex proved to be effective for free metal- or base counterpart homocoupling of phenyl acetylene at room temperature. To the best of our knowledge, this is the first example of using Ni(ii) complex without using any reducing agent due to the promotion ancillary effect of non-innocent o-aminophenol ligand which acts as an “electron reservoir” and can reversibly accept and donate electrons in the catalytic cycle. The theoretical calculation confirms the magnetostructure, electronic spectrum and confirmed the suggested mechanism of phenyl acetylene homocoupling with emphasis on the role of non-innocent ligand electro-activity and the effect of ligand substituent on the efficiency and stability of the complex. A new Ni(ii) complex, was synthesized from the reaction of a non-innocent o-aminophenol ligand, and Ni(OAc)2.![]()
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Affiliation(s)
- Mina Nasibipour
- Department of Chemistry, College of Sciences, Shiraz University 71454 Shiraz Iran
| | - Elham Safaei
- Department of Chemistry, College of Sciences, Shiraz University 71454 Shiraz Iran
| | | | - Andrzej Wojtczak
- Nicolaus Copernicus University, Faculty of Chemistry 87-100 Torun Poland
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Schwarz D, Acharjya A, Ichangi A, Kochergin YS, Lyu P, Opanasenko MV, Tarábek J, Vacek Chocholoušová J, Vacek J, Schmidt J, Čejka J, Nachtigall P, Thomas A, Bojdys MJ. Tuning the Porosity and Photocatalytic Performance of Triazine-Based Graphdiyne Polymers through Polymorphism. CHEMSUSCHEM 2019; 12:194-199. [PMID: 30335905 DOI: 10.1002/cssc.201802034] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/17/2018] [Indexed: 06/08/2023]
Abstract
Crystalline and amorphous organic materials are an emergent class of heterogeneous photocatalysts for the generation of hydrogen from water, but a direct correlation between their structures and the resulting properties has not been achieved so far. To make a meaningful comparison between structurally different, yet chemically similar porous polymers, two porous polymorphs of a triazine-based graphdiyne (TzG) framework are synthesized by a simple, one-pot homocoupling polymerization reaction using as catalysts CuI for TzGCu and PdII /CuI for TzGPd/Cu . The polymers form through irreversible coupling reactions and give rise to a crystalline (TzGCu ) and an amorphous (TzGPd/Cu ) polymorph. Notably, the crystalline and amorphous polymorphs are narrow-gap semiconductors with permanent surface areas of 660 m2 g-1 and 392 m2 g-1 , respectively. Hence, both polymers are ideal heterogeneous photocatalysts for water splitting with some of the highest hydrogen evolution rates reported to date (up to 972 μmol h-1 g-1 with and 276 μmol h-1 g-1 without Pt cocatalyst). Crystalline order is found to improve delocalization, whereas the amorphous polymorph requires a cocatalyst for efficient charge transfer. This will need to be considered in future rational design of polymer catalysts and organic electronics.
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Affiliation(s)
- Dana Schwarz
- Faculty of Science, Department of Organic Chemistry, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic
| | - Amitava Acharjya
- Institute of Chemistry, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Arun Ichangi
- Faculty of Science, Department of Organic Chemistry, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Yaroslav S Kochergin
- Faculty of Science, Department of Organic Chemistry, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic
| | - Pengbo Lyu
- Faculty of Science, Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic
| | - Maksym V Opanasenko
- Faculty of Science, Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic
- J. Heyrovský Institute of Physical Chemistry of the CAS, v.v.i., Dolejškova 2155/3, 182 23, Prague 8, Czech Republic
| | - Ján Tarábek
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Jana Vacek Chocholoušová
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Jaroslav Vacek
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Johannes Schmidt
- Institute of Chemistry, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Jiří Čejka
- Faculty of Science, Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic
- J. Heyrovský Institute of Physical Chemistry of the CAS, v.v.i., Dolejškova 2155/3, 182 23, Prague 8, Czech Republic
| | - Petr Nachtigall
- Faculty of Science, Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic
| | - Arne Thomas
- Institute of Chemistry, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Michael J Bojdys
- Faculty of Science, Department of Organic Chemistry, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
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