Targeted synthesis of a polypyridyl polyoxometalate coordination complex using microwave-assisted reaction conditions

2018 ◽  
Vol 74 (11) ◽  
pp. 1384-1389
Author(s):  
Jingjing Xu ◽  
Robert W. Gable ◽  
Chris Ritchie
Keyword(s):  
Aqueous Media ◽  
Organic Ligand ◽  
Solvent System ◽  
Crystallographic Analysis ◽  
Water Soluble ◽  
Coordination Complex ◽  
Microwave Assisted Synthesis ◽  
H Nmr ◽  
Microwave Assisted ◽  
The Stability

In this article, we build upon our recent efforts that have focused on demonstrating the value of microwave-assisted synthesis in polyoxometalate (POM) chemistry. Herein, we report for the first time a microwave-assisted approach that enabled the facile preparation and crystallization of a large POM-containing coordination complex. The judicious selection and reaction of a sparingly water-soluble transition-metal-substituted polyanion (TMSP) salt with the tritopic ligand 2,4,6-tris(4-pyridyl)-1,3,5-triazine (TPT) in a mixed solvent system under moderately forcing conditions yields Ba9[(BIIIWVI 11O39CoIII)3(C18H12N6)]·38H2O in moderate yield. Crystallographic analysis reveals significant intermolecular interactions between the organic ligand and neighbouring polyanions, predominantly C—H...O(water) in nature; meanwhile, the solvated regions of the crystal show significant disorder. To supplement the crystallographic study, combustion analysis, and IR and 1H NMR spectroscopic analyses were conducted, revealing good bulk purity and the stability of the complex in aqueous media.

scholarly journals One-Pot Microwave-Assisted Synthesis of Water-Soluble Pyran-2,4,5-triol Glucose Amine Schiff Base Derivative: XRD/HSA Interactions, Crystal Structure, Spectral, Thermal and a DFT/TD-DFT

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 117
Author(s):  
Yousef Hijji ◽  
Rajeesha Rajan ◽  
Hamdi Ben Yahia ◽  
Said Mansour ◽  
Abdelkader Zarrouk ◽  
...  
Keyword(s):  
Schiff Base ◽  
Molecular Orbital ◽  
Density Functional ◽  
Condensation Reaction ◽  
3D Structure ◽  
Water Soluble ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted ◽  
Td Dft

The(3R,4R,6R)-3-(((E)-2-hydroxybenzylidene)amino)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,4,5-triol water-soluble Glucose amine Schiff base (GASB-1) product was made available by condensation of 2-hydroxybenzaldehyde with (3R,6R)-3-amino-6-(hydroxymethyl)-tetra-hydro-2H-pyran-2,4,5-triol under mono-mode microwave heating. A one-pot 5-minute microwave-assisted reaction was required to complete the condensation reaction with 90% yield and without having byproducts. The 3D structure of GASB-1 was solved from single crystal X-ray diffraction data and computed by DFT/6-311G(d,p). The Hirshfeld surface analysis (HSA), molecular electronic potential (MEP), Mulliken atomic charge (MAC), and natural population analysis (NPA) were performed. The IR and UV-Vis spectra were matched to their density functional theory (DFT) relatives and the thermal behavior was resolved in an open-room condition via thermogravimetry/Derivative thermogravimetry (TG/DTG) and differential scanning calorimetry (DSC). The highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO), density of state (DOS), and time-dependence TD-DFT computations were correlated to the experimental electron transfer in water and acrylonitrile solvents.

scholarly journals Microwave-assisted synthesis and characterization of some optically active poly(ester-imide) thermoplastic elastomers

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Saeed Zahmatkesh ◽  
Abdol Reza Hajipour
Keyword(s):  
Thermal Analyses ◽  
Specific Rotation ◽  
Thermoplastic Elastomers ◽  
Optically Active ◽  
Microwave Assisted Synthesis ◽  
H Nmr ◽  
Microwave Assisted ◽  
Diacid Chloride ◽  
Elemental Analyses

AbstractPyromellitic dianhydride (1) was reacted with L-leucine (2) to result in [N,N'-(pyromellitoyl)-bis-L-leucine diacid] (3). This compound (3) was converted to N,N'-(pyromellitoyl)-bis-L-leucine diacid chloride (4) by reaction with thionyl chloride. The microwave-assisted polycondensation of this diacid chloride (4) with polyethyleneglycol-diol (PEG-200) and/or three synthetic bisphenols furnish a series of new PEIs and Co-PEIs in a laboratory microwave oven (Milestone). The resulting polymers and copolymers have inherent viscosities in the range of 0.31- 0.53 dl g-1. These polymers are optically active, thermally stable and soluble in polar aprotic solvents such as DMF, DMSO, NMP, DMAc and sulfuric acid. All of the above polymers were fully characterized by IR spectroscopy, 1H NMR spectroscopy, elemental analyses, specific rotation and thermal analyses. Some structural characterizations and physical properties of these optically active PEIs and Co-PEIs are reported.

Water-soluble TRIS-terminated PAMAM dendrimers: microwave-assisted synthesis, characterization and Cu(ii) intradendrimer complexes

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60581-60595 ◽  
Author(s):  
Ali Serol Ertürk ◽  
Mustafa Ulvi Gürbüz ◽  
Metin Tülü ◽  
Abdürrezzak Emin Bozdoğan
Keyword(s):  
Drug Carriers ◽  
Pamam Dendrimers ◽  
Water Soluble ◽  
Microwave Assisted Synthesis ◽  
Potential Drug ◽  
Microwave Assisted

Microwave-assisted synthesis, characterization and Cu(ii) complexes of water-soluble TRIS-terminated PAMAM dendrimers as novel potential drug carriers and templates for nanomaterials.

Microwave-assisted synthesis of zinc 5-(4-carboxyphenyl)-10,15,20-triphenylporphyrin and zinc 5-(4-carboxyphenyl)-10,15,20-triphenylchlorin

2015 ◽  
Vol 19 (04) ◽  
pp. 595-600 ◽  
Author(s):  
Rima Chouikrat ◽  
Aymeric Champion ◽  
Régis Vanderesse ◽  
Céline Frochot ◽  
Albert Moussaron
Keyword(s):  
Reaction Times ◽  
Microwave Assisted Synthesis ◽  
Spectroscopic Techniques ◽  
H Nmr ◽  
Microwave Assisted ◽  
Experimental Protocols ◽  
Time Of Reaction

The microwave-assisted synthesis of zinc 5-(4-carboxyphenyl)-10,15,20-triphenylporphyrin and zinc 5-(4-carboxyphenyl)-10,15,20-triphenylchlrorin are described and compared to classic conditions of synthesis in terms of time of reaction and yields obtained. The new experimental protocols are easy to implement required small amounts of reagents and solvents and lead to short reaction times. All compounds have been characterized by 1 H NMR, MS and spectroscopic techniques.

Microwave-assisted synthesis of highly water-soluble graphene towards electrical DNA sensor

Nanoscale ◽  
2010 ◽  
Vol 2 (12) ◽  
pp. 2692 ◽  
Author(s):  
Bong Gill Choi ◽  
HoSeok Park ◽  
Min Ho Yang ◽  
Young Mee Jung ◽  
Sang Yup Lee ◽  
...  
Keyword(s):  
Water Soluble ◽  
Microwave Assisted Synthesis ◽  
Dna Sensor ◽  
Microwave Assisted

ChemInform Abstract: Microwave-Assisted Synthesis of Oligothiophene Semiconductors in Aqueous Media Using Silica and Chitosan Supported Pd Catalysts.

ChemInform ◽  
2008 ◽  
Vol 39 (34) ◽  
Author(s):  
Silvia Alesi ◽  
Francesca Di Maria ◽  
Manuela Melucci ◽  
Duncan J. Marquarrie ◽  
Rafael Luque ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Microwave Assisted Synthesis ◽  
Pd Catalysts ◽  
Microwave Assisted ◽  
Supported Pd Catalysts ◽  
Supported Pd
Sign in / Sign up

Export Citation Format

Share Document