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All results from a given calculation for C2H4N2O2 (Oxalamide)

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-338.546784
Energy at 298.15K-338.553221
Nuclear repulsion energy233.633449
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 mPW1PW91/6-31+G**
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 3779 3597 0.00      
2 Ag 3625 3450 0.00      
3 Ag 1836 1747 0.00      
4 Ag 1614 1536 0.00      
5 Ag 1441 1371 0.00      
6 Ag 1112 1059 0.00      
7 Ag 782 744 0.00      
8 Ag 536 511 0.00      
9 Ag 400 381 0.00      
10 Au 681 648 0.33      
11 Au 498 474 270.62      
12 Au 380 362 240.50      
13 Au 97 93 8.15      
14 Bg 829 789 0.00      
15 Bg 665 633 0.00      
16 Bg 408 388 0.00      
17 Bu 3780 3598 201.94      
18 Bu 3625 3451 138.98      
19 Bu 1810 1723 754.88      
20 Bu 1605 1528 325.51      
21 Bu 1336 1271 131.54      
22 Bu 1102 1049 11.84      
23 Bu 579 551 25.56      
24 Bu 274 261 41.08      

Unscaled Zero Point Vibrational Energy (zpe) 16396.7 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 15606.4 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 mPW1PW91/6-31+G**
ABC
0.18893 0.12449 0.07504

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.771 0.000
C2 0.000 -0.771 0.000
O3 1.043 1.409 0.000
O4 -1.043 -1.409 0.000
N5 -1.242 1.275 0.000
N6 1.242 -1.275 0.000
H7 -1.381 2.271 0.000
H8 -2.022 0.636 0.000
H9 1.381 -2.271 0.000
H10 2.022 -0.636 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 N5 N6 H7 H8 H9 H10
C11.54181.22272.41661.34072.39382.03962.02673.34122.4632
C21.54182.41661.22272.39381.34073.34122.46322.03962.0267
O31.22272.41663.50612.28892.69192.57313.16123.69602.2670
O42.41661.22273.50612.69192.28893.69602.26702.57313.1612
N51.34072.39382.28892.69193.56061.00571.00904.41173.7825
N62.39381.34072.69192.28893.56064.41173.78251.00571.0090
H72.03963.34122.57313.69601.00574.41171.75695.31694.4760
H82.02672.46323.16122.26701.00903.78251.75694.47604.2394
H93.34122.03963.69602.57314.41171.00575.31694.47601.7569
H102.46322.02672.26703.16123.78251.00904.47604.23941.7569

picture of Oxalamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 121.463 C1 C2 N6 112.108
C1 N5 H7 120.070 C1 N5 H8 118.530
C2 C1 O3 121.463 C2 C1 N5 112.108
C2 N6 H9 120.070 C2 N6 H10 118.530
O3 C1 N5 126.429 O4 C2 N6 126.429
H7 N5 H8 121.401 H9 N6 H10 121.401
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.439      
2 C 0.439      
3 O -0.570      
4 O -0.570      
5 N -0.564      
6 N -0.564      
7 H 0.343      
8 H 0.352      
9 H 0.343      
10 H 0.352      


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 -30.647 -12.424 0.000
y -12.424 -33.413 0.000
z 0.000 0.000 -35.957
Traceless
 xyz
x 4.038 -12.424 0.000
y -12.424 -0.111 0.000
z 0.000 0.000 -3.927
Polar
3z2-r2-7.853
x2-y22.766
xy-12.424
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> 144.620
(<r2>)1/2 12.026