Research Fellow, Inorganic Chemistry Research Institute, Hungarian
Academy of Science, 1967-71
Dr. Univ., Eötvös Loránd University, 1970
Teaching Assistant, Eötvös Loránd University, 1971-75
Assistant Professor, Eötvös Loránd University, 1975-81
C.Sc. Chemistry, Eötvös Loránd University, 1977
Associate Professor, Eötvös Loránd University, 1981-97
D.Sc. Chemistry, Hungarian Academy of Science, 1996
Dr. Habil., Eötvös Loránd University, 1997
Full Professor, Eötvös Loránd University, 1997-
Head of Department, Department of General and Inorganic Chemistry,
1997-
Research at a Glance
synthetic organometallic chemistry:inert atmospheric techniques
to prepare main group and transition metal organics
organometallic mass spectrometry: determination of thermochemical
data, investigation of fragmentation patterns, application of RRKM/QET theory
in organometallic mass spectroscopy
photoelectron spectroscopy (PES):instrument development,
investigation of the electronic structure of organometallic compounds, gas
phase reactions, in situ measurement of transient species, investigation
of the relationship between catalytic activity and the PES of organometallic
catalyzers
photoelectron-photoion coincidence spectroscopy (PEPICO):
investigation of the fragmentation paths, rates and energetics of energy
selected molecular ions, measurement and modelling of time-of-flight distributions
of metastable ions, breakdown diagrams, photoionization efficiency curves
Longer Periods Abroad
1973-74: Hungarian State Fellowship: Universita di Bologna,
Laboratorio di CNR, Bologna, Italy
1982-83: Fulbright Fellowship: University of North Carolina
at Chapel Hill, NC, U.S.A.
International Relations
Professor Hans Joahim Breunig; Universität Bremen, Germany:
Photoelectron-spectroscopy of antimony-organic compounds, investigation of
rotational isomerism and lone-pair interactions and their relation to the
photoelectron spectra
Kenan Professor Tomas Baer; University of North Carolina, NC, U.S.A.;
Advanced Light Source at the Berkeley Lab, CA, U.S.A.: Photoelectron-photoion
coincidence spectroscopy of organometallic complexes, investigation of catalytic
model-compounds, transient species release from organometallic precursors
Professor Alberto Modelli, Universita di Bologna, Italy:
Electron transmission spectroscopy of organometallic compounds
Teaching Activities
Organometallic Chemistry
Attainment target:Inroduction to the basics of organometallic
chemistry and preparation for the "Inorganic and Organometallic Synthetic
Laboratory Course" as well as for the "Advanced Organometallic Chemistry"
lectures.
Detailed programme:Basic principles and definitions. The
main types of the metal-carbon bond. The main groups of metal organyls. Stability
of organometallics. Compounds with sigma-donor ligands: structure and bonding,
preparations and chemical properties. Compounds with pi-donor ligands: structure
and bonding, preparations and chemical properties. Organometallic catalysis.
Advanced Organometallic Chemistry
Attainment target: The course allows the students to study
in depth the most recent results in the research and applications of organometallic
compounds. This knowledge is of equal importance in the research laboratory
and in the field of applied chemistry.
Detailed programme: Organometallic derivatives of the main
group elements with emphasis on pi-complexes, and on compounds with element-carbon
and element-element multiple bonds. Sigma-bonded organometallic compounds
of transition metals, compounds containing multiple bonds between metal
atoms. Manipulations and experimental techniques in handling and preparation
of organometallic compounds, advanced industrialal applications, MOCVD. Mass
spectroscopy of metal organyls. Gas phase inorganic and organometallic chemistry.
Inorganic and Organometallic Synthetic Laboratory
Course
Attainment target:Preparation of inorganic and organometallic
compounds. Synthetic principles and methods.
Detailed programme: Electrochemical reactions: cathodic reduction.
Study of molecular oxygen fixation. Synthesis of metal carbonyls.
Reduction by using dissolving metal. Synthesis of organometallic compounds
by using anionic alkyating agent. Transition metal ?sandwich? compounds.
Use of organometallic reagent in organic synthesis. Preparation and reactions
of transition metal organyls. Transition metal catalysis. Chemical Vapour
Deposition. Organometallic photochemistry. Reactions in MW field.
Inorganic and Organometallic Special Laboratory
Practice
Attainment target: To gain experience in preparations and
manipulations carried out at low temperatures, in high vacuum and inert atmosphere
(Schlenk technique). Sample preparation of air sensitive compounds by use
of dry box. Structural investigations of the syntesized compounds by multi-nuclear
NMR, FT-IR and UPS methods.
Detailed programme:Synthesis of main group and transition
metal organic derivatives. Recording and interpretation of their FT-IR, multi
nuclear (1H, 13C, 15N, 17O, 29Si) NMR and UPS spectra. MOCVD of hard coatings.
Imvestigation of reactive intermediates. Preparation of mixed oxides and complexes
as precursors for metallic and superconducting materials. Determinations of
organic and inorganic contaminants in air, water and soil samples.
Photoionization Techniques
Attainment target:The course introduces students to the
basic principles and applications of UV Photoelectron Spectroscopy. The knowledge
provided can be helpful for graduate and PhD studies as well as for any
other fields of professional activity in succession of university studies.
Detailed programme:Photoionization and basic principles.
Instrumentation. The photoelectron spectrum, factors influencing the band
shape. The Koopmans' theorem, interpretation of spectra. Chemical applications
of photoelectron spectroscopy. X-ray photoelectron spectroscopy (XPS), method
based on zero kinetic energy analysis (ZEKE), photoelectron-photoion coincidence
(PEPICO).
Supervised Students
Over 20 undergraduate research (TDK) theses
13 M.Sc. theses
5 Dr.Univ. theses
6 Ph.D. theses (in progress)
Selected students under prof. Szepes´s supervision:
24th Chemistry Olimpiad, 1992 Undergrad. Research (PES), 1993- First prize, ELTE Undergrad. Research Conference, 1996 First prize, National Undergrad. Research Conference, 1997 M.Sc., 1997 (national award for theses) Pro Scientia National Award, 1997 Ph.D. student, 1997-
György Tarczay, 1993-
25th Chemistry Olimpiad, 1993 Undergrad. Research (PES), 1994- First prize, ELTE Undergrad. Research Conference, 1997 M.Sc., 1998 Ph.D. student, 1998-
István Csonka, 1993-
22th Chemistry Olimpiad, 1990 Undergrad. Research (PES), 1995- First prize, ELTE Undergrad. Research Conference, 1995 Second Prize, National Undergrad. Research Conference, 1995 M.Sc., 1995 Ph.D. student, 1995-98
26th and 27th Chemistry Olimpiads, 1994, 1995 Undergrad. Research (PES), 1996-97
András Bődi, 1998-
29th Chemistry Olimpiad, 1997 Undergrad. Research (PES), 1998-
Memberships
Hungarian Chemical Society
Federation of European Chemical Societies, Division of Chemical Education
Hungarian Society of Science
IUPAC, corresponding member
Awards
Széchenyi Fellowship for Professors, 1997-
Publications
Book chapters
Borossay J., Szepes L., Fotoelektron-spektroszkópia.
Molekulaspektroszkópia, Szerk.: Kovács I., Sz?ke J., Akadémiai Kiadó
, Budapest, 1987, 719-761.
Szepes, L., Nagy, A., Zanathy, L., PES of organic derivatives of As,
Sb and Bi, The chemistry of organic arsenic, antimony and bismuth compounds,
Ed.: S. Patai, John Wiley & Sons Ltd, London, 1994, 265-313.
Szepes, L., Tarczay, Gy., Photoelectron Spectrometers, Encyclopedia
of Spectroscopy and Spectrometry, Academic Press, London, 1999
Borossay, J., Csákvári, B., Szepes, L., Determination of bond energies
of organic silicon compounds on the basis of appearance potentials, Int.
J. Mass Spectrom. Ion Phys., 7, 47 (1971)
Borossay J., Csákvári B., Knausz D., Szepes L., Elektronütközéses
ionizáció tömegspektrometriás vizsgálata, I. Magy. Kém. Foly., 77,
593 (1969)
Boda A., Borossay J., Szepes L., Mándy T., Elektronütközéses ionizáció
tömegspektrometriás vizsgálata, II. Magy. Kém. Foly., 80, 401 (1974)
Szepes, L., Distefano, G., Pignataro, S., Steric inhibition of resonance
in acetanilides by UV photoelectron spectroscopy, Annali di Chimica
, 64, 159 (1974)
Distefano, G., Pignataro, S., Szepes, L., Borossay, J., Photoelectron
spectroscopy of triphenyl derivatives of the Group V. elements, J. Organomet.
Chem., 102, 313 (1975)
Distefano, G., Pignataro, S., Szepes, L., Borossay, J., Photoelectron
spectroscopy study of triphenyl derivatives of the Group IV. elements,
J. Organomet. Chem., 104, 173 (1976)
Szepes, L., Náray-Szabó, G., Colonna, P., Distefano, G., Photoelectron
He(I) spectra of small silanes, J. Organomet. Chem., 117, 141 (1976)
Innorta, G., Szepes, L., Borossay, J., Mass spectrometric studies
on XSiH3 type compounds, Acta Chimica Acad. Sci. Hung.,
89, 23 (1976)
Bolygó E., Borossay J., Szepes L., Innorta G, A kváziegyensúlyi elmélet
(QET) alkalmazása szilánok tömegspektrumának számolására, Magy. Kém. Foly.
, 82, 593 (1976)
Szepes, L., Korányi, T., Náray-Szabó, G., Modelli, A., Ultraviolet
photoelectron spectra of Group IV hexamethyl derivatives containing a metal-metal
bond, J. Organomet. Chem., 217, 35 (1981)
Szepes, L., Torkos, K., Dobó, R., A new analytical method for the
determination of the water content of transformer oils, IEEE Transactions
on Electrical Insulation, EI-17, 345 (1982)
Borossay J., Szepes L., A fotoionizáció spektroszkópiai alkalmazása:
fotoelektron-spektroszkópia, Magyar Kémikusok Lapja, XXXXVII, 253
(1983)
Szepes, L., Baer, T., Dissociation dynamics of energy-selected hexamethyldisilane
ions and the heats of formation of (CH3)3Si+
and (CH3)3Si, J. Amer. Chem. Soc., 106, 273
(1984)
Szepes L., Baer T., (CH3)3SiX típusú vegyületek
vizsgálata fotoelektron-fotoion koincidenciával, I., Magy. Kém. Foly.,
90, 104 (1984)
Langó, J., Szepes, L., Császár, P., Innorta, G., Studies on the unimolecular
decomposition processes of organometallic ions, J. Organomet. Chem.
, 269, 133 (1984)
Szepes L., Kétparaméteres koincidencia módszerek az elektronspektroszkópiában,
MTA Kém. Közl., 64, 157 (1985)
Szepes L., Baer T., (CH3)3SiX típusú vegyületek
vizsgálata fotoelektron-fotoion koincidenciával, II., Magy. Kém. Foly
., 92, 297 (1986)
Distefano, G., Zanathy, L., Szepes, L., Breunig, H. J., Ultraviolet
photoelectron spectroscopy of diphenyltrimethylsilyl-amine, -phosphine, -arsine,
and -stibine, J. Organomet. Chem., 338, 181 (1988)
Nagy, A., Green, J. C., Szepes, L., Zanathy, L., HeI and HeII photoelectron
spectroscopic investigation of substituent effects in aminosilanes, J.
Organomet. Chem., 419, 27 (1991)
Deutschmann, L., Ramirez, J., Reich, S., Suhr, H., Wendel, H., Zhao,
Y., Szepes, L., Some new hard coatings prepared by plasma enhanced CVD using
organometallics, ISPC-10 Bochum, Aug. 1991, 24-29p.
Csákvári B., Nagy A., Zanathy L., Szepes L., Változatos kémiai felhasználású
VUV fotoelektron-spektrométer (ATOMKI ESA 32), Magy. Kém. Foly.,98,
415 (1992)
Reich, S., Suhr, H., Hankó, K., Szepes, L., Deposition of thin films
of zirconium and hafnium boride by plasma enhanced vapor deposition, Advanced
Materials, 4, 650 (1992)
Ramirez, J., Suhr, H., Szepes, L., Zanathy, L., Deposition of silicon
carbide films by plasma enhanced chemical vapour deposition, J. Organomet.
Chem., 514, 23 (1996)
Nagy, A., Szepes, L., Vass, G., Zanathy, L., He(I) photoelectron spectroscopic
study of half- and bent sandwich tetrahydroborates, J. Organomet. Chem.
,485, 215 (1995)
Hankó, K., Szepes. L., Vass, G., Arene-transition metal complexes
as precursors of hard coatings prepared by the chemical vapour deposition
technique, J. Organomet. Chem., 492, 235 (1995)
Sztáray, B., Nagy, A., Szepes, L., Breunig, H-J., Rotational isomerism
in tetramethyldistibane studied by UV photoelectron spectroscopy, J. Organomet.
Chem., 515, 249 (1996)
Csonka, I., Vass, G., , Szepes, L., Szabó D., Kapovits, I., He(I)/He(II)
ultraviolet photoelectron spectroscopic studies on organosulphur compounds
with emphasis on the sulphur-oxygen interactions, J. Mol. Struct (THEOCHEM)
, 455, 141 (1998)
Vass, G., Sztáray B., Szepes, L., Photoelectron Spectroscopy of Mono-
and Binuclear Iron and Chromium Cyclooctatetraene Complexes, J.Organomet.
Chem., 560, 7 (1998)
Frigyes, D., Szepes, L., Gas-phase photoelectron spectroscopic study
of (s -allyl)Mn(CO)5 and (
s -allyl)Re(CO)5, J.Organomet. Chem., 563, 147 (1998)
Sztáray, B., Rosta, E., Böcskey, Zs., Szepes, L., Geometry and electronic
structure of bis(tetrahydridoborato)bis(cyclopentadienyl)zirconium(IV), J.Organomet.
Chem., 582, 267 (1999)
Csonka, I., Mörtl, M., Knausz, D., Harmat, V., Szepes, L., Geometry
and electronic structure of silylated hydroxylamine and carbamic acid derivatives,
J.Organomet. Chem., 579, 38 (1999)
Szepes, L., Kotschy, A., Vass, G., Updated inorganic and organometallic
laboratory course for junior chemistry students, Chemistry Education: Research
and Practice in Europe, A Special Publication, accepted for publication
Tarczay, Gy., Vass, G., Magyarfalvi, G., Szepes, L., He(I) Photoelectron
spectroscopy and electronic structure of alkyllithium clusters, in preparation
Conference abstracts
(from 1993)
Nagy, A., Zanathy, L., Vass, G., Szepes, L., He(I) Photoelectron spectroscopy
of transition metal cyclopentadienyl borohydrides, Abstracts of the Xth
FECHEM Conference on Organometallic Chemistry, Agia Pelagia, Crete, Greece,
1993, p.262
Knausz, D., Szepes, L., Vass, G., Szalay, R., Mörtl, M., Ujszászy,
K., Correlation between structure and spectroscopic behaviour of silylcarbaminates,
Abstracts of the Xth FECHEM Conference on Organometallic Chemistry
, Agia Pelagia, Crete, Greece, 1993, p.103
Hankó, K., Vass, G., Szepes, L., Arene-transition metal complexes
as precursors of hard coatings prepared by CVD-technique, Abstracts of the
1st Journal of Organometallic Chemistry Conference, München,
Germany, 1993, p.38
Frigyes, D., Csonka, I., Szepes, L., Investigation of
s-allyl(R)p -allyl rearrangements in Mn
and Re complexes using He(I) photoelectron spectroscopy, Abstracts of the
XIth FECHEM Conference on Organometallic Chemistry, Parma, Italy,
1995, p. 130
Sztáray, B., Vass, G., Szepes, L., Gas phase UV photoelectron spectroscopic
and theoretical studies on transition metal cyclooctatetraene complexes, Abstracts
of the XIth FECHEM Conference on Organometallic Chemistry, Parma,
Italy, 1995, p. 183
Csonka I., Frigyes D., Vass G., Kapovits I., Szepes L., He(II) sugárforrással
szerzett tapasztalatok szerves kénvegyületek UV fotoelektron-spektroszkópiás
vizsgálatánál, 39. Magyar Spektrokémiai Vándorgy?lés
kiadványa, Mosonmagyaróvár, 1996. szeptember 4-6., 203
Sztáray B., Szalay P., Szepes L., Magánospár-kölcsönhatás vizsgálata
UV fotoelektron-spektroszkópiával és elméleti módszerekkel,
39. Magyar Spektrokémiai Vándorgy?lés kiadványa, Mosonmagyaróvár,
1996. szeptember 4-6., 208
Sztáray, B., Szalay, P. G., Szepes, L., Lone-pair interactions in
organoarsenic and organoantimony compounds, XXIII. European Congress on
Molecular Spectroscopy, Balatonfüred, Hungary, 25-30 August, 1996, 457
Sztáray, B., Vass, G., Szepes, L., The geometry and Electronic Structure
of CpCoCOT; 40th Hungarian Conference on Spectrochemistry, Debrecen,
June 29-July 4, 1997, Debrecen, Book of Abstracts, M60.
Tarczay, Gy., Csonka, I., Pöppl, L., Szepes, L., Structure and Decomposition
of TiCl4?2L Type (L=Pyridine, Pyrazine, Triazine) Complexes, XIIth FECHEM
Conference on Organometallic Chemistry, August 31-September 5, 1997, Prague,
Book of Abstracts, PB 144.
Csonka, I., Mörtl, M., Knausz, D., Szepes, L., The Pyramidal Si-H-N-O
Skeleton in Silylhydroxylamines: A Quantumchemical and UV Photoelectron Spectroscopic
Study, XIIth FECHEM Conference on Organometallic Chemistry, August
31-September 5, 1997, Prague, Book of Abstracts, PA173.
Frigyes, D., Szepes, L., Electronic and Molecular Structure of Manganese
Pentacarbonyl Hydride and Manganese Tetracarbonyl Hydride: An ab initio Quantumchemical
Study, XIIth FECHEM Conference on Organometallic Chemistry, August
31-September 5, 1997, Prague, Book of Abstracts, PA176.
Rosta, E., Sztáray, B., Szepes, L., The Geometry and Electronic Structure
of (C5H5)2Zr(BH4)2, XIIth FECHEM Conference
on Organometallic Chemistry, August 31-September 5, 1997, Prague, Book
of Abstracts, PB176.
Vass, G., Sztáray, B., Szepes, L., Photoelectron Spectroscopy of Mono-
and Binuclear Iron, Molybdenum and Tungsten Cyclooctatetraene Complexes;
XVIIIth International Conference on Organometallic Chemistry, München,
1998.
University textbooks
Borossay J., Rohonczy J., Szepes L., Zanathy L.
, Szervetlen és fémorganikus vegyületek el?állítása, Tankönyvkiadó
, Budapest, 1990.
Hartmann H., Knausz D., Szepes L., Általános kémiai példatár, Tankönyvkiadó
, Budapest, 1994.
Kotschy A., Mörtl M., Szalay R., Szepes L., Vass G., Szervetlen és
fémorganikus kémiai gyakorlatok, ELTE Általános és Szervetlen Kémiai Tanszék,
1999
