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

using model chemistry: CCD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes H in 1A'

Conformer 1 (H out)

Jump to S1C2
Vibrational Frequencies calculated at CCD/cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at CCD/cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (H in)

Jump to S1C1
Energy calculated at CCD/cc-pVDZ
 hartrees
Energy at 0K-357.561097
Energy at 298.15K-357.566279
Nuclear repulsion energy233.539910
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 CCD/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' 3793 3628 91.95      
2 A' 3719 3558 144.62      
3 A' 3644 3486 82.65      
4 A' 1939 1855 195.38      
5 A' 1871 1790 373.99      
6 A' 1631 1561 58.43      
7 A' 1502 1437 246.15      
8 A' 1386 1326 340.57      
9 A' 1253 1199 13.16      
10 A' 1119 1071 2.59      
11 A' 831 795 9.98      
12 A' 643 615 15.93      
13 A' 558 534 2.24      
14 A' 414 396 6.35      
15 A' 277 265 39.53      
16 A" 850 813 0.00      
17 A" 729 698 107.96      
18 A" 661 633 6.22      
19 A" 464 444 39.32      
20 A" 263 252 206.94      
21 A" 109 105 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 13828.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 13229.3 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 CCD/cc-pVDZ
ABC
0.19045 0.12597 0.07582

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 -0.796 0.000
C2 0.000 0.749 0.000
O3 -1.066 1.347 0.000
O4 1.015 -1.452 0.000
O5 -1.230 -1.292 0.000
N6 1.234 1.287 0.000
H7 1.349 2.292 0.000
H8 2.036 0.669 0.000
H9 -1.812 -0.508 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 N6 H7 H8 H9
C11.54562.39581.20371.33112.41793.36702.50371.8400
C21.54561.22182.42412.38321.34582.04862.03752.2054
O32.39581.22183.48752.64392.30072.59283.17491.9992
O41.20372.42413.48752.25022.74733.75842.35402.9800
O51.33112.38322.64392.25023.56634.41473.80910.9765
N62.41791.34582.30072.74733.56631.01151.01213.5352
H73.36702.04862.59283.75844.41471.01151.76214.2221
H82.50372.03753.17492.35403.80911.01211.76214.0236
H91.84002.20541.99922.98000.97653.53524.22214.0236

picture of Oxamic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 119.473 C1 C2 N6 113.309
C1 O5 H9 104.717 C2 C1 O4 123.231
C2 C1 O5 111.668 C2 N6 H7 120.022
C2 N6 H8 118.882 O3 C2 N6 127.218
O4 C1 O5 125.101 H7 N6 H8 121.096
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability