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

using model chemistry: mPW1PW91/aug-cc-pVDZ

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 mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-358.435963
Energy at 298.15K-358.441081
Nuclear repulsion energy232.710390
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3796 3637 90.05      
2 A' 3764 3607 84.91      
3 A' 3617 3466 59.44      
4 A' 1836 1759 17.04      
5 A' 1819 1744 644.52      
6 A' 1601 1535 108.85      
7 A' 1441 1381 23.05      
8 A' 1330 1275 59.03      
9 A' 1206 1156 273.55      
10 A' 1096 1050 2.06      
11 A' 789 756 7.66      
12 A' 611 585 73.48      
13 A' 530 508 0.13      
14 A' 413 396 3.68      
15 A' 267 256 16.55      
16 A" 844 808 5.32      
17 A" 681 652 122.66      
18 A" 640 613 14.21      
19 A" 445 427 18.85      
20 A" 367 352 176.56      
21 A" 70 67 5.91      

Unscaled Zero Point Vibrational Energy (zpe) 13582.2 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 13015.8 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 mPW1PW91/aug-cc-pVDZ
ABC
0.19636 0.12147 0.07505

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.752 0.000
C2 -0.056 -0.786 0.000
O3 -1.098 -1.405 0.000
O4 1.038 1.373 0.000
O5 -1.211 1.300 0.000
N6 1.186 -1.313 0.000
H7 1.297 -2.313 0.000
H8 1.988 -0.701 0.000
H9 -1.086 2.260 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 N6 H7 H8 H9
C11.53882.42091.20931.32862.38133.32852.46261.8581
C21.53881.21282.42002.38371.34912.04062.04553.2150
O32.42091.21283.50462.70722.28632.56183.16553.6651
O41.20932.42003.50462.24942.69023.69562.28202.3012
O51.32862.38372.70722.24943.54524.39793.77280.9682
N62.38131.34912.28632.69023.54521.00661.00834.2339
H73.32852.04062.56183.69564.39791.00661.75365.1568
H82.46262.04553.16552.28203.77281.00831.75364.2683
H91.85813.21503.66512.30120.96824.23395.15684.2683

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 122.801 C1 C2 N6 110.921
C1 O5 H9 106.946 C2 C1 O4 122.985
C2 C1 O5 112.258 C2 N6 H7 119.333
C2 N6 H8 119.675 O3 C2 N6 126.278
O4 C1 O5 124.757 H7 N6 H8 120.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.789      
2 C 0.670      
3 O -0.563      
4 O -0.571      
5 O -0.451      
6 N -0.075      
7 H -0.008      
8 H 0.003      
9 H 0.206      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.171 0.626 0.000 2.260
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.499 -10.428 0.000
y -10.428 -29.006 0.000
z 0.000 0.000 -33.843
Traceless
 xyz
x -4.074 -10.428 0.000
y -10.428 5.664 0.000
z 0.000 0.000 -1.590
Polar
3z2-r2-3.181
x2-y2-6.492
xy-10.428
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.957 -0.097 0.000
y -0.097 7.346 0.000
z 0.000 0.000 4.308


<r2> (average value of r2) Å2
<r2> 141.652
(<r2>)1/2 11.902