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 C2H4N2O2 (Oxalamide)

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-336.735116
Energy at 298.15K-336.742052
Nuclear repulsion energy232.367304
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 B3LYP/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 3652 3524 0.00      
2 Ag 3499 3376 0.00      
3 Ag 1781 1718 0.00      
4 Ag 1618 1561 0.00      
5 Ag 1394 1345 0.00      
6 Ag 1123 1084 0.00      
7 Ag 747 721 0.00      
8 Ag 549 530 0.00      
9 Ag 407 393 0.00      
10 Au 732 706 345.89      
11 Au 682 658 294.14      
12 Au 439 423 61.93      
13 Au 149 144 12.33      
14 Bg 870 839 0.00      
15 Bg 734 709 0.00      
16 Bg 608 586 0.00      
17 Bu 3652 3524 138.91      
18 Bu 3500 3377 112.68      
19 Bu 1756 1694 318.38      
20 Bu 1637 1579 432.14      
21 Bu 1334 1287 143.16      
22 Bu 1121 1082 7.91      
23 Bu 584 564 14.82      
24 Bu 284 274 47.05      

Unscaled Zero Point Vibrational Energy (zpe) 16425.1 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 15848.6 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 B3LYP/3-21G
ABC
0.18215 0.12650 0.07465

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.772 0.000
C2 0.000 -0.772 0.000
O3 1.058 1.425 0.000
O4 -1.058 -1.425 0.000
N5 -1.264 1.238 0.000
N6 1.264 -1.238 0.000
H7 -1.464 2.230 0.000
H8 -2.006 0.541 0.000
H9 1.464 -2.230 0.000
H10 2.006 -0.541 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 N5 N6 H7 H8 H9 H10
C11.54441.24342.43871.34732.37462.06572.01893.33992.3971
C21.54442.43871.24342.37461.34733.33992.39712.06572.0189
O31.24342.43873.54992.33012.67082.64743.18893.67722.1819
O42.43871.24343.54992.67082.33013.67722.18192.64743.1889
N51.34732.37462.33012.67083.53881.01181.01774.41223.7223
N62.37461.34732.67082.33013.53884.41223.72231.01181.0177
H72.06573.33992.64743.67721.01184.41221.77395.33474.4398
H82.01892.39713.18892.18191.01773.72231.77394.43984.1544
H93.33992.06573.67722.64744.41221.01185.33474.43981.7739
H102.39712.01892.18193.18893.72231.01774.43984.15441.7739

picture of Oxalamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 121.666 C1 C2 N6 110.218
C1 N5 H7 121.590 C1 N5 H8 116.535
C2 C1 O3 121.666 C2 C1 N5 110.218
C2 N6 H9 121.590 C2 N6 H10 116.535
O3 C1 N5 128.116 O4 C2 N6 128.116
H7 N5 H8 121.875 H9 N6 H10 121.875
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.609     0.540
2 C 0.609     0.541
3 O -0.520     -0.490
4 O -0.520     -0.492
5 N -0.756     -0.839
6 N -0.756     -0.835
7 H 0.325     0.421
8 H 0.341     0.368
9 H 0.325     0.420
10 H 0.341     0.365


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 -0.006 0.005 0.000 0.008


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.744 -11.537 0.000
y -11.537 -32.331 0.000
z 0.000 0.000 -34.590
Traceless
 xyz
x 3.717 -11.537 0.000
y -11.537 -0.164 0.000
z 0.000 0.000 -3.552
Polar
3z2-r2-7.105
x2-y22.587
xy-11.537
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.045 -0.378 0.000
y -0.378 5.481 0.000
z 0.000 0.000 1.688


<r2> (average value of r2) Å2
<r2> 144.377
(<r2>)1/2 12.016