ABSTRACT

1
(No Transcript)
2
ABSTRACT
The present project focuses on designing
heterotrimetallic magnetic materials with
enhanced characteristics. A special emphasis is
devoted to initiating, developing and/or
combining new physical properties within the
heterometallic systems enclosing cores of three
different spin-carriers. The rational inclusion
of 3d and/or 4f cations within the same molecular
entity could generate new categories of
heterotrimetallic complexes photomagnets,
luminescent or chiral compounds or with combined
properties, namely magneto-luminescence or
magneto-chirality. These new molecular materials
open large perspectives in the developing of
molecular prototypes for revolutionary optical,
high-storage devices or in quantum computing. An
important part of the project is related with the
human resources, both senior researchers and
young graduated or Ph.D. students being employed
in this project. The research theme is very
actual and reliable and the obtained results will
be reported in national and international ISI
rated publications.
3
(No Transcript)
4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
valen represent a side-off Schiff-base
compartmental ligand resulted from a 21
condensation reaction between o-vanillin and
ethylenediamine
12
-The three compounds are isostructural, their
structure being trinuclear and made-up from
WV(bpy)(CN)6- coordinated through a
single-cyanide group to the heterobimetallic unit
CuII(valpn)LnIII (Ln Gd, Tb, Ho) .
-For Gd(III) derivative, the ?T vs. T plot
indicate a predominant ferromagnetic interaction,
the values of the coupling constant J, the Landé
factor and zero-field splitting being estimated
with the spin hamiltonian JCu(II)-Gd(III)
8.90 cm-1, jCu(II)-W(V) -0.83 cm-1 si D 1.85
cm-1.
-The value of the magnetic interaction between
copper(II) and gadolinium(III) was correlated
with the value of the dihedral angle between
ltOCuOgt and ltOGdOgt linked by phenoxo- bridge. The
smaller is the dihedral angle (in this case 12o)
, the higher is the J value.
Though the Dy and Tb derivatives did not show AC
signals, these compounds represent the first
examples of heterotrimetallic systems obtained by
employing a 5d heteroleptic metalloligand.
valpn is a side-off compartmental ligand
resulted from the 21 condensation reaction of
o-vanillin and propylene diamine
13
BUDGET 2011-2012
No. BUDGET CHAPTER (EXPENSES) TOTAL 2011 (lei)
1. SALARIES 20000
2. OVERHEAD 10003.53
3. MOBILITY 0
4. INVENTORY   29996.47
  TOTAL 60000
No. BUDGET CHAPTER (EXPENSES) TOTAL 2012 (lei)
1. SALARIES 100000
2. OVERHEAD 49996.47
3. MOBILITY 51064
4. INVENTORY   98939.53
  TOTAL 300000
14
2013
Diana Visinescu and Maria-Gabriela Alexandru
The aim of the school was to provide the
essential theory and practice of small-molecule
single-crystal X-ray crystallography. The course
was also a hands-on approach to crystallography,
offering the opportunity to measure and solve the
structure of single-crystals brought by each
participant, after learning the basics in
crystallography. The practical/theoretical
knowledge offered by the intensive
crystallography school is extremely important in
order to perform X-ray diffraction measurements
on single-crystals and to analyze the dataset for
a complete structural characterization of
complexes and also for a better understanding of
their magnetic behaviour.
Research stage
Diana Visinescu and Maria-Gabriela Alexandru
Synthesis of new heteroleptic 4(5)d cyano-based
metalloligands. Testing the reactivity of the new
obtained metallocyanates against cationic
complexes. Structural and DC/AC magnetic
measurements of the obtained precursors and
compounds. Preparing of manuscripts.
15
RESULTS 2013
Conferences
18th Romanian International Conference on
Chemistry and Chemical Engineering, RICCCE XVIII,
4-7 september 2013, Sinaia
Contributions- 2 oral presentations
Towards heterotrimetallic nanomagnets, D.
Visinescu, M.-G. Alexandru, A. Madalan and M.
Andruh, oral communication
New polymetallic systems obtained using anions of
organic acids as spacers, Traian D. Pasatoiu,
Augustin M. Madalan, Marius Andruh, oral
communication
International Conference of Physical
Chemistry-ROMPHYSCHEM 15, 11-13 september 2013,
Bucharest
Contribution - one oral presentation
New molecular-based magnetic materials. D.
Visinescu, M.-G. Alexandru, A. Madalan, B. Jurca,
M. Andruh, J.P. Sutter and R. Clérac, oral
communication
16
(No Transcript)
17
(No Transcript)
18
Details regarding the main results in 2013
Inorg. Chem. Comm., 2013, 35, 252-254
19
valdp is a side-off compartmental ligand
resulted from the 21 condensation reaction of
o-vanillin and 1,2-diamino propane
20
BUDGET 2013 (in progress)
No. BUDGET CHAPTER (EXPENSES) TOTAL 2011 (lei)
1. SALARIES 110000
2. OVERHEAD 50000
3. MOBILITY 50000
4. INVENTORY   90000
  TOTAL 300000