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

using model chemistry: B3LYP/6-311+G(3df,2p)

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 B3LYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-358.609365
Energy at 298.15K-358.614414
Nuclear repulsion energy232.524498
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/6-311+G(3df,2p)
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' 3754 3630 85.54      
2 A' 3721 3598 80.90      
3 A' 3587 3468 57.02      
4 A' 1804 1744 8.90      
5 A' 1794 1734 641.30      
6 A' 1600 1547 116.06      
7 A' 1407 1361 9.88      
8 A' 1311 1268 66.48      
9 A' 1179 1140 291.30      
10 A' 1094 1058 3.88      
11 A' 772 746 8.02      
12 A' 615 595 71.85      
13 A' 526 508 0.32      
14 A' 413 399 3.77      
15 A' 269 260 15.62      
16 A" 836 808 5.33      
17 A" 670 648 115.28      
18 A" 626 605 27.34      
19 A" 440 425 17.57      
20 A" 354 343 173.33      
21 A" 62 60 5.66      

Unscaled Zero Point Vibrational Energy (zpe) 13416.0 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 12973.3 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 B3LYP/6-311+G(3df,2p)
ABC
0.19698 0.12054 0.07478

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.758 0.000
C2 -0.053 -0.790 0.000
O3 -1.091 -1.408 0.000
O4 1.031 1.380 0.000
O5 -1.214 1.302 0.000
N6 1.189 -1.318 0.000
H7 1.298 -2.318 0.000
H8 1.993 -0.714 0.000
H9 -1.103 2.265 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 N6 H7 H8 H9
C11.54832.42531.20471.33032.39233.33812.47791.8677
C21.54831.20822.42582.39211.35002.03992.04833.2297
O32.42531.20823.50442.71322.28182.55653.16193.6729
O41.20472.42583.50442.24662.70293.70742.30452.3110
O51.33032.39212.71322.24663.55514.40593.78830.9687
N62.39231.35002.28182.70293.55511.00541.00624.2534
H73.33812.03992.55653.70744.40591.00541.74805.1735
H82.47792.04833.16192.30453.78831.00621.74804.2969
H91.86773.22973.67292.31100.96874.25345.17354.2969

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 122.775 C1 C2 N6 111.073
C1 O5 H9 107.626 C2 C1 O4 123.084
C2 C1 O5 112.182 C2 N6 H7 119.285
C2 N6 H8 120.046 O3 C2 N6 126.152
O4 C1 O5 124.735 H7 N6 H8 120.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.983      
2 C 0.976      
3 O -0.748      
4 O -0.744      
5 O -0.524      
6 N -0.665      
7 H 0.200      
8 H 0.242      
9 H 0.279      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.162 0.608 0.000 2.246
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.993 -0.128 0.000
y -0.128 7.431 0.000
z 0.000 0.000 4.307


<r2> (average value of r2) Å2
<r2> 142.277
(<r2>)1/2 11.928