scholarly journals Obtaining the lattice energy of the anthracene crystal by modern yet affordable first-principles methods

2013 ◽  
Vol 138 (20) ◽  
pp. 204304 ◽  
Author(s):  
J. C. Sancho-García ◽  
J. Aragó ◽  
E. Ortí ◽  
Y. Olivier
1997 ◽  
Vol 499 ◽  
Author(s):  
A. V. G. Chizmeshya ◽  
O. F. Sankey ◽  
P. F. McMillan

ABSTRACTWe present the results of an exploratory theoretical study of Na3ClO in the anti-perovskite structure. The FLAPW method is used to calculate the static lattice properties, pressure equation of state, and the ferroic Flu phonon frequencies in the cubic PmSm phase. We also compute the compression behavior of NaCl and Na2O and find that the lattice energy of Na3ClO at ambient pressure (static lattice) is only marginally larger than of products, in agreement with experiment. However, detailed calculations reveal M- and R-point phonon instabilities in the ideal cubic phase and suggest the existence of lower symmetry structure involving slight rotations of ONa6 octahedra.


Science ◽  
2014 ◽  
Vol 345 (6197) ◽  
pp. 640-643 ◽  
Author(s):  
Jun Yang ◽  
Weifeng Hu ◽  
Denis Usvyat ◽  
Devin Matthews ◽  
Martin Schütz ◽  
...  

Computation of lattice energies to an accuracy sufficient to distinguish polymorphs is a fundamental bottleneck in crystal structure prediction. For the lattice energy of the prototypical benzene crystal, we combined the quantum chemical advances of the last decade to attain sub-kilojoule per mole accuracy, an order-of-magnitude improvement in certainty over prior calculations that necessitates revision of the experimental extrapolation to 0 kelvin. Our computations reveal the nature of binding by improving on previously inaccessible or inaccurate multibody and many-electron contributions and provide revised estimates of the effects of temperature, vibrations, and relaxation. Our demonstration raises prospects for definitive first-principles resolution of competing polymorphs in molecular crystal structure prediction.


1998 ◽  
Vol 93 (6) ◽  
pp. 947-954 ◽  
Author(s):  
C.J. ADAM ◽  
S.J. CLARK ◽  
M.R. WILSON ◽  
G.J. ACKLAND ◽  
J. CRAIN

1998 ◽  
Vol 77 (4) ◽  
pp. 1063-1075
Author(s):  
W. C. Mackrodt, E.-A. Williamson, D. W

1997 ◽  
Vol 42 (2) ◽  
pp. 173-174
Author(s):  
Terri Gullickson
Keyword(s):  

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