Supramolecular Organic and Organometallic Chemistry Centre

Abstract
The present research proposal aims to develop a series of directions which are less or non-explored to date in the chemistry of graphene. Its objectives rely on the experience of the four participants in organic synthesis, organometallic chemistry, molecular magnetism and catalysis. The project will stimulate not only the enhancement of the value of previously synthesized compounds by the partners, but also the development of an original chemistry. The hierarchical organization of organometallic – classical transition metal complexes on graphene surface is a step forward in materials science. The design of 3-D frameworks incorporating graphene is original and opens interesting perspectives for applications. The grafting of magnetic and luminescent complexes on graphene could bring an important added value in molecular magnetism. The catalytic processes to be investigated are carefully selected, in order to address important problems in organic synthesis, environmental protection and energy.

Main objectives
The project will focus on the following major objectives:
(i) design of networks by covalent connections between the decorated graphene sheets;
(ii) design of graphene - based hybridmaterials with appropriate organometallic/metalloid units as ligands for transition metals;
(iii) single molecule magnets and luminescent molecules grafted on graphene;
(iv) functionalization of graphene with macrocycles, cryptands and rotaxanes for organocatalytic reactions;
(v) development of multifunctional catalysts for controlled cascade reactions;
(vi) applications in catalysis (the valorization of the CO₂ emissions; the hydrogenation of nitro-alkenes and mixtures of acetylene-ethylene; C-C and C-N coupling reactions) and gas sorption.
A special attention in these studies will be addressed to the investigation of the catalytic mechanisms.

Results 2018 - 2022

Articles

1. Lead(II) siloxides,
   A.-A. Someșan, E. Le Coz, C. I. Raţ, V. Dorcet, T. Roisnel, C. Silvestru and Y. Sarazin, Chem. Eur. J., 2019, 25, 16236-16240.
   DOI: 10.1002/chem.201904713
   
   
2. Molecular structures of (2-bromophenyl)diphenylstibane and {2'-bromo-[1,1'-biphenyl)-2-yl}diphenylstibane,
   M. Olaru, K. T. Kegyes and C. I. Raţ, Rev. Roum. Chim, 2020, 65(7-8), 719-724.
   DOI: 10.33224/rrch.2020.65.7-8.10
   
   
3. Hypercoordinated triorganotellurium(IV) derivatives of chalcogen-centred organophosphorus ligands,
   E. Denes, A. Beleagă and A. Silvestru, Inorg. Chim. Acta, 2020, 511, 119841.
   DOI: 10.1016/j.ica.2020.119841
   
   
4. Reactivity of a carbonyl moiety in organotin(IV) compounds. Novel Pd(II) and Cu(II) complexes supported by organotin(IV) ligands,
   A.-A. Someșan, C. Silvestru and R. Varga, New J. Chem., 2021, 45, 3817-3827.
   DOI: 10.1039/d0nj06016j
   
   
5. New hyperdoordinated triaryltelluronium derivatives of organophosphorus ligands. Synthesis and structural characterization,
   E. Denes, M. Vlassa, C. Silvestru and A. Silvestru, Rev. Roum. Chim., 2021, 66(1), 33-40.
   DOI: 10.33224/rrch.2021.66.1.03
   
   
6. {2,6-Bis[(dimethylamino)methyl]phenyl}mercury(II) acetate, [2,6-(Me₂NCH₂)₂C₆H₃]Hg(OAc) – a useful intermediate for selective palladation of 1,3-(Me₂NCH₂)₂C₆H₄,
   L. Kiss, S. Sergiu, M. Vlassa, A. Silvestru, C. I. Raț and C. Silvestru, Rev. Roum. Chim., 2021, 66(2), 167-177.
   DOI: 10.33224/rrch.2021.66.2.07
   
   
7. Cu(II) and Ag(I) complexes of the pyrazole-derived diorganoselenide (pzCH₂CH₂)₂Se. Synthesis, solid state structure and solution behavior,
   R. A. Popa, V. Lippolis and A. Silvestru, Inorg. Chim. Acta, 2021, 520, 120272.
   DOI: 10.1016/j.ica.2021.120272
   
   
8. Synthesis and characterization of ternary graphene oxide, MnFe₂O₄ nanoparticles, and PAMAM dendrons nanocomposite decorated with palladium as heterogeneous catalyst for nitroaromatics reduction,
   A. Ramezanpour, K. Karami, M. Kharaziha, C. Silvestru and P. Bayat, Appl. Organomet. Chem., 2021, e6329.
   DOI: 10.1002/aoc.6329
   
   
9. C,O-chelated organotin(IV) derivatives as potential anticancer agents: synthesis, characterization and cytotoxic activity,
   A.-A. Someșan, S.-M. Vieriu, A. Crăciun, C. Silvestru, P. Chiroi, A. Nutu, A. Jurj, R. Lajos, I. Berindan-Neagoe and R. A. Varga, Appl. Organomet. Chem., 2021, accepted
   DOI: 10.1002/aoc.6540
   
   
10. Organolead(IV) compounds containing tetraphenyldichalcogenoimidodiphosphinato ligands - synthesis and structural characterization,
    E. Denes, A. Silvestru and C. Silvestru, 2021, in preparation.
    DOI:
    
    
11. Organopnicogen(III) compounds – synthesis, solution behavior and solid state structure,
    F. Adăscăliței, C. I. Raț, C. Silvestru and A. Soran, 2021, in preparation.
    DOI: