return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for MgCO3 (Magnesium Carbonate)

using model chemistry: LSDA/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/3-21G
 hartrees
Energy at 0K-459.322310
Energy at 298.15K-459.324064
HF Energy-459.322310
Nuclear repulsion energy187.491835
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at LSDA/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1825 1795 242.19      
2 A1 841 827 34.83      
3 A1 808 795 25.83      
4 A1 529 520 51.08      
5 B1 740 728 6.06      
6 B1 167 164 38.72      
7 B2 860 846 332.35      
8 B2 651 640 16.75      
9 B2 474 466 8.95      

Unscaled Zero Point Vibrational Energy (zpe) 3447.5 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 3391.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at LSDA/3-21G
ABC
0.38672 0.13985 0.10271

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.710
O2 0.000 0.000 -1.924
Mg3 0.000 0.000 1.515
O4 0.000 1.167 0.092
O5 0.000 -1.167 0.092

Atom - Atom Distances (Å)
  C1 O2 Mg3 O4 O5
C11.21382.22471.41651.4165
O21.21383.43842.32972.3297
Mg32.22473.43841.84001.8400
O41.41652.32971.84002.3347
O51.41652.32971.84002.3347

picture of Magnesium Carbonate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 Mg3 85.126 C1 O5 Mg3 85.126
O2 C1 O4 124.503 O2 C1 O5 124.503
O4 C1 O5 110.994 O4 Mg3 O5 78.754
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.626      
2 O -0.444      
3 Mg 0.686      
4 O -0.434      
5 O -0.434      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 9.351 9.351
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.753 0.000 0.000
y 0.000 -36.894 0.000
z 0.000 0.000 -18.453
Traceless
 xyz
x -0.079 0.000 0.000
y 0.000 -13.791 0.000
z 0.000 0.000 13.870
Polar
3z2-r227.740
x2-y29.141
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.402 0.000 0.000
y 0.000 4.527 0.000
z 0.000 0.000 10.069


<r2> (average value of r2) Å2
<r2> 99.402
(<r2>)1/2 9.970