Odd Gropen

4.6k citations

108 papers · 4.0k · 1 hit paper · h-index 29

Impact in

Inorganic Chemistry top 1%
- Radioactive element chemistry and processing
- Inorganic Fluorides and Related Compounds
Atomic and Molecular Physics, and Optics top 1%
- Advanced Chemical Physics Studies
- Atomic and Molecular Physics
- Spectroscopy and Quantum Chemical Studies

Papers in

Atomic and Molecular Physics, and Optics 67
- Advanced Chemical Physics Studies 67
- Atomic and Molecular Physics 18
Inorganic Chemistry 29
- Inorganic Fluorides and Related Compounds 19

Co-authors: Ulf Wahlgren (33 shared papers)Christel M. Marian (2 shared papers)Bernd Artur Heß (1 shared paper)Trond Saue (10 shared papers)Lars G. M. Pettersson (5 shared papers)Knut Fægri (9 shared papers)Bernd Schimmelpfennig (14 shared papers)Hans M. Seip (3 shared papers)
Journals: Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry (26 papers)Chemical Physics (10 papers)Chemical Physics Letters (9 papers)The Journal of Chemical Physics (9 papers)Theoretical Chemistry Accounts (7 papers)
Partner nations: Norway Sweden France

In The Last Decade

Odd Gropen

107 papers receiving 3.9k citations

Odd Gropen's Hit Papers

align trajectories log scale

A mean-field spin-orbit method applicable to correlated wavefunctions 1996 · 1.1k citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

1996 Chemical Physics Letters

Peers

Countries citing papers authored by Odd Gropen

Since Specialization

Citations

This map shows the geographic impact of Odd Gropen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Odd Gropen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Odd Gropen more than expected).

Fields of papers citing papers by Odd Gropen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Odd Gropen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Odd Gropen. The network helps show where Odd Gropen may publish in the future.

Co-authors

The 25 scholars most cited alongside Odd Gropen, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Odd Gropen Line = papers co-authored together Odd Gropen links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 108 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	A mean-field spin-orbit method applicable to correlated wavefunctions Chemical Physics Letters ·Bernd Artur Heß, Christel M. Marian, Ulf Wahlgren, Odd Gropen Hit paper breakdown →	1996	1119
2	Structure of Uranium(VI) in Strong Alkaline Solutions. A Combined Theoretical and Experimental Investigation The Journal of Physical Chemistry A ·Ulf Wahlgren, Henry Moll, Ingmar Grenthe, Bernd Schimmelpfennig, Laurent Maron, Valérie Vallet, Odd Gropen	1999	171
3	Principles of direct 4-component relativistic SCF: application to caesium auride Molecular Physics ·Trond Saue, Knut Fægri, Trygve Ulf Helgaker, Odd Gropen	1997	167
4	Effective core potential calculations using frozen orbitals. Applications to transition metals Chemical Physics ·Lars G. M. Pettersson, Ulf Wahlgren, Odd Gropen	1983	142
5	Gaussian basis sets for the fifth row elements, Mo‐Cd, and the sixth row elements W‐RN Journal of Computational Chemistry ·Odd Gropen	1987	119
6	A Combined Experimental and Density Functional Theory Investigation of Hydrocarbon Activation at a Cationic Platinum(II) Diimine Aqua Complex under Mild Conditions in a Hydroxylic Solvent Journal of the American Chemical Society ·Hanne Heiberg, Lars Johansson, Odd Gropen, Olav B. Ryan, Ole Swang, Mats Tilset	2000	116
7	Failure of the CNDO/2 method to predict the barriers and conformations in some conjugated systems Chemical Physics Letters ·Odd Gropen, Hans M. Seip	1971	112
8	Effective core potential parameters for first- and second-row atoms The Journal of Chemical Physics ·Lars G. M. Pettersson, Ulf Wahlgren, Odd Gropen	1987	102
9	The electronic structure of the PtH molecule: Fully relativistic configuration interaction calculations of the ground and excited states The Journal of Chemical Physics ·Lucas Visscher, Trond Saue, W. C. Nieuwpoort, Knut Fægri, Odd Gropen	1993	98
10	Reduction of uranyl by hydrogen: an ab initio study Chemical Physics ·Valérie Vallet, Bernd Schimmelpfennig, Laurent Maron, Christian Teichteil, Thierry Leininger, Odd Gropen, Ingmar Grenthe, Ulf Wahlgren	1999	77
11	Relativistic effects on the bonding of heavy and superheavy hydrogen halides Chemical Physics Letters ·Trond Saue, Knut Fægri, Odd Gropen	1996	66
12	On the combination of ECP-based CI calculations with all-electron spin-orbit mean-field integrals Chemical Physics Letters ·Bernd Schimmelpfennig, Laurent Maron, Ulf Wahlgren, Christian Teichteil, Hilde Fagerli, Odd Gropen	1998	59
13	Gaussian basis sets for the fourth‐row main group elements, In–Xe Journal of Computational Chemistry ·Ann‐Brith Strömberg, Odd Gropen, Ulf Wahlgren	1983	58
14	Bonding and electronic structure in diatomic ThO: Quasirelativistic effective core potential calculations Journal of Molecular Structure THEOCHEM ·Christel M. Marian, Ulf Wahlgren, Odd Gropen, Pekka Pyykkö	1988	53
15	Reduction Behavior of the Early Actinyl Ions in Aqueous Solution The Journal of Physical Chemistry A ·Valérie Vallet, Laurent Maron, Bernd Schimmelpfennig, Thierry Leininger, Christian Teichteil, Odd Gropen, Ingmar Grenthe, Ulf Wahlgren	1999	52
16	A determinantal approach to spin-orbit configuration interaction Theoretical Chemistry Accounts ·Merethe Sjøvoll, Odd Gropen, Jeppe Olsen	1997	51
17	A theoretical study of the chemisorption of methane on a Ni(100) surface Chemical Physics ·Ole Swang, Knut Fægri, Odd Gropen, Ulf Wahlgren, Per E. M. Siegbahn	1991	50
18	Relativistic and electron-correlation contributions to the dipole polarizability of the alkaline-earth-metal atoms Ca, Sr, and Ba Physical Review A ·Andrzej J. Sadlej, Miroslav Urban, Odd Gropen	1991	47
19	On the efficiency of an effective Hamiltonian in spin-orbit CI calculations Chemical Physics Letters ·Bernd Schimmelpfennig, Laurent Maron, Ulf Wahlgren, Christian Teichteil, Hilde Fagerli, Odd Gropen	1998	45
20	On the performance of four-component relativistic density functional theory: Spectroscopic constants and dipole moments of the diatomics HX and XY (X,Y=F, Cl, Br, and I) The Journal of Chemical Physics ·O. Fossgaard, Odd Gropen, Manuel Corral Valero, Trond Saue	2003	44

About Odd Gropen

Odd Gropen is a scholar working on Atomic and Molecular Physics, and Optics, Inorganic Chemistry, Physical and Theoretical Chemistry, Organic Chemistry and Materials Chemistry, having authored 108 papers that have together received 4.0k indexed citations. Recurring topics across this work include Advanced Chemical Physics Studies (67 papers), Inorganic Fluorides and Related Compounds (19 papers), Atomic and Molecular Physics (18 papers), Chemical Thermodynamics and Molecular Structure (10 papers), Molecular Junctions and Nanostructures (10 papers), Molecular Spectroscopy and Structure (8 papers), Catalysis and Oxidation Reactions (8 papers) and Inorganic and Organometallic Chemistry (7 papers). The work is most often cited by research in Inorganic Chemistry (1.3k citations), Atomic and Molecular Physics, and Optics (2.2k citations), Physical and Theoretical Chemistry (611 citations), Spectroscopy (689 citations) and Catalysis (254 citations). Odd Gropen has collaborated with scholars based in Norway, Sweden and France. Frequent co-authors include Ulf Wahlgren, Christel M. Marian, Bernd Artur Heß, Trond Saue, Lars G. M. Pettersson, Knut Fægri, Bernd Schimmelpfennig, Hans M. Seip, Laurent Maron and Ole Swang. Their work appears in journals such as Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry, Chemical Physics, Chemical Physics Letters, The Journal of Chemical Physics and Theoretical Chemistry Accounts.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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Odd Gropen

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