Proiect PN-II-RU-TE-2011-3-0033:   Project timespan   Project team   Abstract   Budget   Results  
Contract: 35/05.10.2011

Title: Hypervalent organotin(IV) compounds containing iminic ligands that exhibit intra- and intermolecular interaction abilities

Project timespan
2011 -- 2014

Abstract
The organometallic chemistry of tin, particularly the investigation of the compounds with direct metal-carbon bond, is an attractive research field, the interest shown by the international scientific community this topic being justified by the outstanding results obtained in a large variety of areas, both of fundamental (the nature of the metal-carbon bond, unusual organometallic species, ligands in the coordination chemistry of the transition metals, supramolecular associations, etc.) and applied interest (polymerization catalysts, specific reagents in organic synthesis, precursors for unconventional materials, biologically active compounds, etc.). The proposed research activities will be focused on:
  • design, synthesis and the characterization of the organic iminic ligands that exhibit intra- and intermolecular coordination abilities, with one or more C=N bond;
  • design of compounds of the type RnSnX4-n, RmR'nSnCl4-(m+n) [R = the above mentioned iminic ligands with one C=N bond; R' = 2-(Me2NCH2)C6H4, organic group], characterization in the solid state and the study of their dynamical behaviour in solution;
  • design of compounds of the type X4-(n+m)R'mSnRnSnR'mX4-(n+m) [R = the above mentioned iminic ligands with more than one C=N bond; R' = 2-(Me2NCH2)C6H4, organic group; n = 1-4, m = 0-3, 2 ≤ n+m ≤ 4], characterization in the solid state and the study of their dynamical behaviour in solution;
  • investigation of the chemical reactivity of these compounds (e.g. halogen exchange, reactions with inorganic salts), synthesis and characterization of stable, water soluble organometallic species (carbonates, nitrates, phophates, etc.).

Budget
Budget chapter (expenses) 2011 (lei) 2012 (lei) 2013 (lei) 2014 (lei) Total
1 Salaries 18.900 110.700 133.200 102.300 365.100
2 Inventory 17.260 93.975,87 96.131,13 39.516,30 246.883
3 Mobility 0 6.074,13 6.508,87 433,74 13.017
4 Overhead 7.232 42.150 47.168 28.450 125.000
5 Total 43.392 252.900 283.008 170.700 750.000

Results
Articles published in 2012
  1. Structural diversity of coordination cores in new homoleptic tetraaryltin(IV) dioxolane, aldehyde and imines. First octacoordinated double helicate tetraorganotin(IV) compound,
    Ioana Barbul, Richard A. Varga, Cristian Silvestru, Eur. J. Inorg. Chem., manuscript submitted for publication.

  2. Di(imino)aryltin(IV) dihalides as potential tectons for heterometallic, coordination compounds,
    Ioana Barbul, Richard A. Varga, Cristian Silvestru, manuscript in preparation.

Articles published in 2013
  1. Structural diversity of coordination cores in new homoleptic tetraaryltin(IV) dioxolane, aldehyde and imines. First octacoordinated double helicate tetraorganotin(IV) compound.
    Ioana Barbul, Richard A. Varga, Cristian Silvestru, Eur. J. Inorg. Chem. 2013, 3146–3154. DOI: 10.1002/ejic.201300245.
    Cover Picture: Eur. J. Inorg. Chem. 18/2013, DOI: 10.1002/ejic.201390078
    Cover Profile: Eur. J. Inorg. Chem. 18/2013, DOI: 10.1002/ejic.201300437

  2. Di(imino)aryltin(IV) dichlorides as tectons for heterometallic coordination compounds.
    Ioana Barbul, Richard A. Varga, Kieran C. Molloy, Cristian Silvestru, Dalton Trans., 2013, 42, 15427–15436. DOI: 10.1039/C3DT52022F
    Selected as HOT Article for September: hot-articles-for-september

Articles published in 2014
  1. [2-(Me2NCH2)C6H4]SnMeCl2 and its hydrolysis product, [{2-(Me2NCH2)C6H4}SnMe(OH)(OH2)]22+·2Br- - Solution and solid state characterization.
    Adrian A. Somesan, Richard A. Varga, Cristian Silvestru, Rev. Roum. Chim., submitted.

  2. Molecular structure of [SnCl4(N=CH-C6H5)(2,6-iPr2)C6H3], a tin tetrachloride complex with an (imino)aryl ligand.
    Ioana Barbul, Richard A. Varga, Main Group Met. Chem., submitted.

Conferences attended in 2012
  1. Hypercoordinated organotin(IV) compounds with new pendant arm ligands,
    Ioana Barbul, Richard A. Varga, Cristian Silvestru
    at The XXV International Conference on Organometallic Chemistry (ICOMC), Lisbon (Portugal), September 2-7 2012.

Conferences attended in 2013
  1. New hypervalent organotin derivatives containing [2-(Me2NCH2)C6H4] moieties,
    A. Somesan, L. Buta,
    at The 10th edition of the International Conference "Students for Students", Cluj-Napoca (Romania), 10-14 April 2013.

  2. New organotin(IV) halides as tectons for heterometallic coordination compounds,
    I. Barbul, R. A. Varga, C. Silvestru
    at 20th EuCheMS Conference on Organometallic Chemistry, St Andrews (Scotland), 30 June - 4 July 2013.
Conferences attended in 2014
  1. Compusi staniu(IV) organici care contin liganzi cu brate pendante,
    R. A. Varga
    at Zilele Academice Clujene, Cluj-Napoca (Romania), 5 July 2014.

  2. Organotin(IV) compounds containing ligands with donor atoms,
    A.-A. Somesan
    at The 11th edition of the International Conference "Students for Students", Cluj-Napoca (Romania), 09 - 13 April 2014.
    Presentation awarded with "Premiul Societatii de Chimie din Romania".
Contributions to PhD Theses
  • Ioana Barbul, Studies in organotin chemistry.
    PhD Thesis elaborated under the supervision of Prof. Dr. Cristian Silvestru and defended in September 2012.
Contributions to BSc Theses
  • Adrian-Alexandru Someşan, Compusi staniu(IV)-organici cu activitate biologica, Iulie 2013.