Please select the period from the menubar on the left or follow the links below.
The cover picture of J. Chem. Inf. Mod. shows T-C380, the first fullerene that does not admit any face spirals, partially
assembled until the point where the spiral fails. Below the fullerene, a schematic drawing
of the partially spiraled fullerene graph is shown. The T-C380 molecule was generated
using the computer program Fullerene using a generalized spiral algorithm discussed in
J. Chem. Inf. Mod. 54, 121 (2014).
The cover picture of our Angewandte Chemie paper (2013) (designed by Cameron Smorenburg)
shows the link between Albert Einstein's special theory of relativity and the fact that mercury
is liquid at room temperature. An old problem is now solved: Monte Carlo
simulations using the diatomic-in-molecule method derived from accurate
ground- and excited-state relativistic calculations for Hg2 show that the melting
temperature for bulk mercury is lowered by 105 K, which is due to relativistic effects.
For more information see F. Calvo, E. Pahl, M. Wormit, P. Schwerdtfeger,
Angew. Chem. Int. Ed. 52, 7583 (2013).
The cover picture of our Angewandte Chemie paper (2010) (designed by Roman Schwerdtfeger)
contains the words of Galadriel to Frodo in
'The Lord of the Rings' by J. R. R. Tolkien and continues: “But the mirror will also show
things unbidden, and those are often stranger and more profitable than things which we wish
to behold. What you will see, if you leave the Mirror free to work, I cannot tell.
For it shows things that were, and things that are, and things that yet may be.
But which it is that he sees, even the wisest cannot always tell.”
The large parity violation effects predicted for the chiral molecule
NWHClI from relativistic density functional theory are shown as a broken mirror image.
The energy difference of 0.7 Hz for the N-W stretching frequency conveniently lies in the
frequency range of CO2 lasers and may be revealed by future high-resolution spectroscopy experiments.
For more information see D. Figgen, A. Koers, P. Schwerdtfeger, Angew. Chem. Int. Ed. 49,
Density functional calculations and electron diffraction gas-phase
measurements show that CrCl2 nucleation processes through the
same structural chain motif as found in the solid state which consists of
two-dimensional, antiferromagnetically coupled CrCl2 units with spin
quantum number S=2 at each Cr atom. For more information see
B. Vest, Z. Varga, M. Hargittai, A. Hermann,
P. Schwerdtfeger, Chem. Europ. J. 14, 5130 (2008).
The cover picture of Angewandte Chemie (2003) shows Lake Matheson in New
Zealand, famous for its reflections of highest peaks Mount Cook and Mount
Tasman. In the macroscopic world mirror images are not perfect due to
imperfections in the mirror. However, at Lake Matheson the waters are often
incredibly still and it is difficult to tell the mountains from its reflection.
In the microscopic world mirror image symmetry is violated as well (parity
violation) and here it is even more difficult to distinguish between
enantiomers. High resolution spectroscopy gave so far no indication for the
breakdown of mirror image symmetry in molecules. The
(C5H5)Re(CO)(NO)I molecule shown in the cover picture
gives unprecedented large parity violation energy differences of 300 Hz which
brings us a step closer to the detection of such tiny effects. For more information see
P. Schwerdtfeger, J. Gierlich and T. Bollwein, Angew. Chem. Int. Ed.
42, 1293 (2003).
A. W. Hauser, N. Mardirossian, J. A. Panetier, M. Head-Gordon, A. T. Bell, P. Schwerdtfeger,
"Functionalized graphene as a gatekeeper for chiral molecules: A new concept for chiral separation",
Angew. Chem. Int. Ed. 53, 9957-9960 (2014).
L. Wirz, R. Tonner, J. Avery, P. Schwerdtfeger, "Structure and Properties of the Non-Spiral Fullerenes
T-C380, D3-C384, D3-C440
and D3-C672 and their Halma and Leapfrog Transforms",
J. Chem. Inf. Mod. 54, 121-130 (2014).
J. Wiebke, P. Schwerdtfeger, E. Pahl, "Melting at High Pressure: Can First-Principles Computational
Chemistry Challenge Diamond-Anvil Cell Experiments?", Angew. Chem. Int. Ed. 52, 13202-13205 (2013).
P. Schwerdtfeger, "One flerovium atom at a time", Nature Chem. 5, 636 (2013).
F. Calvo, E. Pahl, M. Wormit, P. Schwerdtfeger, "Evidence for low temperature melting of mercury owing to
relativity", Angew. Chem. Int. Ed. 52, 7583-7585 (2013).
P. Schwerdtfeger, L. Wirz, J. Avery, "Program Fullerene - A Software Package for Constructing
and Analyzing Structures of Regular Fullerenes", J. Comput. Chem. 34, 1508-1526 (2013).
D. A. Götz, R. Schäfer, P. Schwerdtfeger, "The performance of density functional and
wavefunction based methods for the 2D and 3D structures of Au10", J. Comput. Chem.
34, 1975-1981 (2013).
A. Hauser, P. Schwerdtfeger, "Nanoporous graphene membranes for efficient 3He/4He
separation", J. Phys. Chem. Lett. 3, 311-318 (2012).
K. Beloy, A. W. Hauser, A. Borschevsky, V. V. Flambaum, P. Schwerdtfeger,
"Effect of α -variation on the vibrational spectrum of Sr2",
Phys. Rev. A 84, 062114-1-4 (2011).
A. Hermann, P. Schwerdtfeger, "Opening of the UV-window for water under pressure",
Phys. Rev. Lett. 106, 187403-1-4 (2011).
D. Figgen, A. Koers, P. Schwerdtfeger, "NWHClI - A small and compact chiral molecule
with large parity violation effects in the vibrational spectrum.",
Angew. Chem. Int. Ed. 49, 2941-2943 (2010).
B. Vest, A. Hermann, P. Schwerdtfeger, "The Nucleation of (Anti)ferromagnetically Coupled Chromium
Dihalides - From Small Clusters to the Solid State", Inorg. Chem. 49, 3169-3182 (2010).
C. Thierfelder, P. Schwerdtfeger, A. Koers, A. Borschevsky, B. Fricke, "Scalar relativistic and
spin-orbit effects in closed-shell superheavy element monohydrides", Phys. Rev. A 80,
S. Biering, A. Hermann, J. Furthmüller, P. Schwerdtfeger, "The unusual solid state structure of mercury oxide:
A first principle relativistic density functional study for the group 12 oxides ZnO, CdO and HgO",
J. Phys. Chem. A 113, 12427-12432 (2009).
A. Hermann, P. Schwerdtfeger, "Ground state properties of crystalline ice from periodic Hartree-Fock and a
coupled cluster based many-body decomposition of the correlation energy", Phys. Rev. Lett.
101, 183005-1-4 (2008).
E. Pahl, F. Calvo, L. Koci, P. Schwerdtfeger, "Towards accurate melting temperatures from ab initio
Monte Carlo simulations for neon and argon: from clusters to the bulk",
Angew. Chem. Int. Ed. 47, 8207-8210 (2008).
A. Hermann, W. G. Schmidt, P. Schwerdtfeger, "Resolving the optical spectrum of water:
Coordination and electrostatic effects", Phys. Rev. Lett. 100, 207403-1-4 (2008).
A. Hermann, M. Lein, P. Schwerdtfeger, "The Gregory-Newton Problem of Kissing Sphere Applied to Chemistry:
The Search for the Species with the Highest Coordination Number.",
Angew. Chem. Int. Ed. 46, 2444-2447 (2007).
N. Gaston, I. Opahle, H. W. Gäggeler, P. Schwerdtfeger,
"Is Eka-Mercury (Element 112) a Group 12 Metal",
Angew. Chem. Int. Ed. 46, 1663-1666 (2007).
P. Schwerdtfeger, N. Gaston, R. P. Krawczyk, R. Tonner, G. E.
Moyano, "Theoretical investigations into rare gas clusters and
crystal lattices of He, Ne, Ar and Kr using many-body interaction
expansions - the Lennard-Jones Potential revised", Phys. Rev. B.
73, 064112-1-19 (2006).
N. Gaston, P. Schwerdtfeger, "From the van der Waals dimer to the solid-state of
mercury with relativistic ab initio and density functional theory", Phys. Rev. B
74, 024105-1-12 (2006).
P. Schwerdtfeger, T. Saue, J. N. P. van Stralen, L. Visscher,
"Relativistic Second-Order Many-Body and Density Functional
Theory for the Parity-Violation Contribution to the C-F Stretching
Mode in CHFClBr.", Phys. Rev. A 71,
J. Crassous, Ch. Chardonnet, T. Saue, P. Schwerdtfeger, "Recent
experimental and theoretical developments towards the observation of
parity violation (PV) effects in molecules by spectroscopy", Org.
Biomol. Chem. 3, 2218-2224 (2005).
P. Schwerdtfeger, R. Bast, “Large Parity Violation Effects in the Vibrational Spectrum of
Organometallic Compounds”, J. Am. Chem. Soc. 126, 1652-1653
P. Schwerdtfeger, R. P. Krawczyk, A. Hammerl, R. Brown, "A
Comparison of Structure and Stability between the Group 11 Halide
Tetramers M4X4 (Cu, Ag, Au; X= F, Cl, Br and I) and the Group 11
Chloride and Bromide Phosphanes (XMPH3)4", Inorg.
R. Bast and P. Schwerdtfeger, “Parity Violation Effects in the C-F Stretching Mode of Heavy
Atom Containing Methyl Fluorides”, Phys. Rev. Lett. 91,
P. Schwerdtfeger, “Gold
Goes Nano – From Small Clusters to Low-Dimensional Assemblies.”, Angew.
Chem. Int. Ed. 42, 1892-1895 (2003).