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All results from a given calculation for C2H4N2O2 (Oxalamide)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-336.650551
Energy at 298.15K-336.657545
Nuclear repulsion energy233.310383
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 mPW1PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3701 3533 0.00      
2 Ag 3540 3379 0.00      
3 Ag 1815 1732 0.00      
4 Ag 1628 1554 0.00      
5 Ag 1421 1357 0.00      
6 Ag 1134 1083 0.00      
7 Ag 763 728 0.00      
8 Ag 556 531 0.00      
9 Ag 405 387 0.00      
10 Au 756 721 499.81      
11 Au 696 664 192.63      
12 Au 446 426 55.00      
13 Au 150 143 13.80      
14 Bg 883 843 0.00      
15 Bg 752 717 0.00      
16 Bg 629 600 0.00      
17 Bu 3702 3533 168.00      
18 Bu 3541 3380 136.40      
19 Bu 1792 1710 360.68      
20 Bu 1643 1568 438.03      
21 Bu 1355 1294 137.19      
22 Bu 1132 1081 12.93      
23 Bu 589 562 15.13      
24 Bu 278 266 49.36      

Unscaled Zero Point Vibrational Energy (zpe) 16652.6 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 15896.6 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 mPW1PW91/3-21G
ABC
0.18319 0.12794 0.07533

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.769 0.000
C2 0.000 -0.769 0.000
O3 1.057 1.417 0.000
O4 -1.057 -1.417 0.000
N5 -1.259 1.231 0.000
N6 1.259 -1.231 0.000
H7 -1.460 2.220 0.000
H8 -1.997 0.532 0.000
H9 1.460 -2.220 0.000
H10 1.997 -0.532 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 N5 N6 H7 H8 H9 H10
C11.53741.23982.42751.34122.36302.05862.01103.32642.3835
C21.53742.42751.23982.36301.34123.32642.38352.05862.0110
O31.23982.42753.53512.32352.65532.64193.17963.65922.1639
O42.42751.23983.53512.65532.32353.65922.16392.64193.1796
N51.34122.36302.32352.65533.52151.00951.01634.39343.7029
N62.36301.34122.65532.32353.52154.39343.70291.00951.0163
H72.05863.32642.64193.65921.00954.39341.77145.31434.4189
H82.01102.38353.17962.16391.01633.70291.77144.41894.1337
H93.32642.05863.65922.64194.39341.00955.31434.41891.7714
H102.38352.01102.16393.17963.70291.01634.41894.13371.7714

picture of Oxalamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 121.507 C1 C2 N6 110.162
C1 N5 H7 121.627 C1 N5 H8 116.416
C2 C1 O3 121.507 C2 C1 N5 110.162
C2 N6 H9 121.627 C2 N6 H10 116.416
O3 C1 N5 128.331 O4 C2 N6 128.331
H7 N5 H8 121.958 H9 N6 H10 121.958
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.628      
2 C 0.628      
3 O -0.535      
4 O -0.535      
5 N -0.806      
6 N -0.806      
7 H 0.348      
8 H 0.364      
9 H 0.348      
10 H 0.364      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.644 -11.711 0.000
y -11.711 -32.239 0.000
z 0.000 0.000 -34.697
Traceless
 xyz
x 3.824 -11.711 0.000
y -11.711 -0.069 0.000
z 0.000 0.000 -3.755
Polar
3z2-r2-7.510
x2-y22.595
xy-11.711
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 143.253
(<r2>)1/2 11.969