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All results from a given calculation for C2H3NO3 (Oxamic acid)

using model chemistry: B1B95/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes H out 1A'
Energy calculated at B1B95/CEP-31G
 hartrees
Energy at 0K-70.772314
Energy at 298.15K-70.777526
Nuclear repulsion energy123.006504
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 B1B95/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 A' 3789 3628 72.26      
2 A' 3713 3555 71.73      
3 A' 3630 3476 75.42      
4 A' 1738 1664 192.31      
5 A' 1697 1625 368.85      
6 A' 1637 1567 119.34      
7 A' 1429 1368 5.53      
8 A' 1315 1259 105.49      
9 A' 1120 1072 180.93      
10 A' 1106 1059 93.37      
11 A' 772 739 4.82      
12 A' 586 561 75.34      
13 A' 522 500 0.79      
14 A' 417 399 10.29      
15 A' 269 257 13.18      
16 A" 806 772 5.09      
17 A" 695 666 540.59      
18 A" 642 615 39.09      
19 A" 617 591 12.43      
20 A" 415 398 15.32      
21 A" 71 68 10.55      

Unscaled Zero Point Vibrational Energy (zpe) 13492.7 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 12919.3 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 B1B95/CEP-31G
ABC
0.18697 0.11678 0.07188

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.757 0.000
C2 -0.056 -0.795 0.000
O3 -1.123 -1.447 0.000
O4 1.071 1.398 0.000
O5 -1.236 1.332 0.000
N6 1.211 -1.328 0.000
H7 1.314 -2.336 0.000
H8 2.027 -0.725 0.000
H9 -1.179 2.315 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 N6 H7 H8 H9
C11.55282.47401.24831.36322.41163.36082.51051.9537
C21.55281.25122.46542.43251.37442.06222.08333.3063
O32.47401.25123.59332.78182.33712.59453.23153.7625
O41.24832.46543.59332.30812.73023.74212.32792.4299
O51.36322.43252.78182.30813.61474.46773.85680.9842
N62.41161.37442.33712.73023.61471.01291.01484.3573
H73.36082.06222.59453.74214.46771.01291.76175.2771
H82.51052.08333.23152.32793.85681.01481.76174.4176
H91.95373.30633.76252.42990.98424.35735.27714.4176

picture of Oxamic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 123.487 C1 C2 N6 110.800
C1 O5 H9 111.646 C2 C1 O4 122.949
C2 C1 O5 112.900 C2 N6 H7 118.715
C2 N6 H8 120.636 O3 C2 N6 125.713
O4 C1 O5 124.151 H7 N6 H8 120.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.195      
2 C -0.094      
3 O -0.064      
4 O -0.105      
5 O -0.250      
6 N -0.409      
7 H 0.345      
8 H 0.370      
9 H 0.401      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.627 0.861 0.000 2.764
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.704 -12.235 0.000
y -12.235 -28.392 0.000
z 0.000 0.000 -33.954
Traceless
 xyz
x -5.531 -12.235 0.000
y -12.235 6.936 0.000
z 0.000 0.000 -1.406
Polar
3z2-r2-2.811
x2-y2-8.311
xy-12.235
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.083 0.088 0.000
y 0.088 5.860 0.000
z 0.000 0.000 2.673


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000