4th EucheMs chemistry congress

Poster Session 2
s1351
chem. Listy 106, s257–s1425 (2012)
Poster session 2 - organic chemistry
P - 0 9 7 7
MASS SPeCtroMetriC inveStiGAtion of
rutheniuM CAtALySed reACtionS
A. SKriBA 1 , J. roithovA 1
1 Faculty of Science Charles University in Prague, Organic and
Nuclear Chemistry, Prague 2, Czech Republic
Transition metal catalysts have occupied the central role in
most carbon-carbon bond-formation reactions in context of
selectivity (chemo-, regio-, diastereo and enantioselectivity) and
atom economy. Compared to other transition metals, ruthenium
has the widest scope of oxidation states (from -2 valent to
octavalent) and various coordination geometries in each electron
configuration. This led to an increased use of ruthenium catalysts
in numbers of reactions. [1, 2] According to these universal properties
there is a need to deeply explore the reaction mechanisms to
discover and understand the great potential of this metal.
Binding energies of ruthenium complex RuCp(CH CN) PF 3 3 6
have been studied by mass spectrometry using collision induced
dissociation with xenon and ligand exchange interactions with
unsaturated hydrocarbons. Reaction intermediates have
been investigated by spectroscopic measurements using
infrared multiphoton dissociation spectroscopy. [3] Experimental
measurements have been compared with quantum chemistry
calculations using density functional theory methods.
references:
1. Murahashi, S.; Takaya, H.; Naota, T. Chem. Rev. 1998, 98,
2599.
2. Trost, B. M.; Frederiksen, M. U.; Rudd, M. T. Angew.
Chem., Int. Ed. 2005, 44, 6630.
3. Roithova, J. Chem. Soc. Rev. 2012, 41, 547.
Keywords: Ruthenium; Mass spectrometry; IR spectroscopy;
Density functional calculations;
4 th EucheMs chemistry congress
P - 0 9 7 8
PrePArAtion of PorPhyrin-BASed hPLC
CoLuMnS for the SePArAtion of fuLLereneS
J. SLAvíCeK 1 , S. SABAtA 2 , K. LAnG 3 , P. LhotáK 1
1 Institute of Chemical Technology Prague, Department of
Organic Chemistry, Prague, Czech Republic
2 Institute of Chemical Process Fundamentals of the ACSR v. v.
i., Department of Organic Synthesis and Analytical Chemistry,
Prague, Czech Republic
3 Institute of Inorganic Chemistry of the ACSR v. v. i.,
Laboratory of Bioinorganic Chemistry, ReD, Czech Republic
Because of their interesting properties fullerenes are very
attractive compounds both for the industry and for the basic
research. Their massive applications are still restricted due to their
high price, which is a consequence of very complicated separation
from the crude fullerite soot. It is known that fullerenes can
interact with porphyrin moieties, especially if they are
preorganised in suitable geometry. We prepared some HPLC
columns based on 5,10,15,20-(p-aminophenyl)porhyrin and his
metallated derivatives anchored on silica gel. These columns were
used in the separation of fullerene mixtures by HPLC under
different conditions and the results were compared with those of
commercial columns designed for fullerene analysis.This research
was supported by the Czech Science Foundation (GACR
203/09/0691) and finacial support from specific university
research (MSMT No 21/2012).
Keywords: Fullerenes; Separation; Porphyrin;
Chromatography;
AUGUst 26–30, 2012, PrAGUE, cZEcH rEPUbLIc