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All results from a given calculation for C2H4N2O2 (Oxalamide)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-63.939487
Energy at 298.15K-63.946540
Nuclear repulsion energy125.476471
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 HF/CEP-31G
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 3995 3601 0.00      
2 Ag 3837 3459 0.00      
3 Ag 1868 1684 0.00      
4 Ag 1788 1612 0.00      
5 Ag 1586 1429 0.00      
6 Ag 1229 1108 0.00      
7 Ag 839 756 0.00      
8 Ag 578 521 0.00      
9 Ag 430 388 0.00      
10 Au 786 708 974.75      
11 Au 681 614 2.10      
12 Au 467 421 8.87      
13 Au 97 88 24.08      
14 Bg 903 814 0.00      
15 Bg 749 675 0.00      
16 Bg 655 590 0.00      
17 Bu 3996 3602 199.54      
18 Bu 3837 3459 201.01      
19 Bu 1808 1630 1006.12      
20 Bu 1788 1612 259.54      
21 Bu 1427 1286 318.11      
22 Bu 1212 1092 0.27      
23 Bu 621 560 44.36      
24 Bu 290 261 43.53      

Unscaled Zero Point Vibrational Energy (zpe) 17733.3 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 15984.8 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 HF/CEP-31G
ABC
0.18662 0.12151 0.07359

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

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 1.071 1.396 0.000
O4 -1.071 -1.396 0.000
N5 -1.235 1.323 0.000
N6 1.235 -1.323 0.000
H7 -1.327 2.317 0.000
H8 -2.044 0.737 0.000
H9 1.327 -2.317 0.000
H10 2.044 -0.737 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 N5 N6 H7 H8 H9 H10
C11.54441.24002.41891.35242.43252.03622.04413.36192.5408
C21.54442.41891.24002.43251.35243.36192.54082.03622.0441
O31.24002.41893.52022.30762.72472.56893.18423.72192.3448
O42.41891.24003.52022.72472.30763.72192.34482.56893.1842
N51.35242.43252.30762.72473.62030.99760.99884.45133.8726
N62.43251.35242.72472.30763.62034.45133.87260.99760.9988
H72.03623.36192.56893.72190.99764.45131.73455.33964.5484
H82.04412.54083.18422.34480.99883.87261.73454.54844.3454
H93.36192.03623.72192.56894.45130.99765.33964.54841.7345
H102.54082.04412.34483.18423.87260.99884.54844.34541.7345

picture of Oxalamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 120.224 C1 C2 N6 114.051
C1 N5 H7 119.337 C1 N5 H8 120.018
C2 C1 O3 120.224 C2 C1 N5 114.051
C2 N6 H9 119.337 C2 N6 H10 120.018
O3 C1 N5 125.725 O4 C2 N6 125.725
H7 N5 H8 120.645 H9 N6 H10 120.645
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.017      
2 C 0.017      
3 O -0.276      
4 O -0.276      
5 N -0.543      
6 N -0.543      
7 H 0.380      
8 H 0.421      
9 H 0.380      
10 H 0.421      


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 -24.676 -11.353 -0.022
y -11.353 -42.826 0.006
z -0.022 0.006 -36.191
Traceless
 xyz
x 14.832 -11.353 -0.022
y -11.353 -12.392 0.006
z -0.022 0.006 -2.440
Polar
3z2-r2-4.881
x2-y218.150
xy-11.353
xz-0.022
yz0.006


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.380 -0.516 -0.001
y -0.516 7.214 -0.001
z -0.001 -0.001 2.877


<r2> (average value of r2) Å2
<r2> 120.007
(<r2>)1/2 10.955