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All results from a given calculation for CHONH2 (formamide)

using model chemistry: CCD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no Planar 1A'
1 2 yes Non-Planar 1A

Conformer 1 (Planar)

Jump to S1C2
Energy calculated at CCD/TZVP
 hartrees
Energy at 0K-169.519101
Energy at 298.15K 
HF Energy-168.996641
Nuclear repulsion energy71.417286
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/TZVP
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' 3801 3604 49.35      
2 A' 3660 3470 52.10      
3 A' 3037 2879 89.08      
4 A' 1859 1762 450.92      
5 A' 1656 1570 69.98      
6 A' 1474 1397 4.56      
7 A' 1290 1223 138.94      
8 A' 1077 1021 7.91      
9 A' 583 553 11.76      
10 A" 1057 1002 1.90      
11 A" 612 580 12.42      
12 A" 337i 320i 266.04      

Unscaled Zero Point Vibrational Energy (zpe) 9884.2 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 9370.2 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/TZVP
ABC
2.46816 0.38061 0.32976

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.419 0.000
O2 1.193 0.238 0.000
N3 -0.935 -0.567 0.000
H4 -0.448 1.425 0.000
H5 -0.637 -1.526 0.000
H6 -1.914 -0.355 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20641.35851.10082.04702.0645
O21.20642.27452.02492.54173.1627
N31.35852.27452.04991.00451.0020
H41.10082.02492.04992.95682.3054
H52.04702.54171.00452.95681.7328
H62.06453.16271.00202.30541.7328

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.297 C1 N3 H6 121.259
O2 C1 N3 124.834 O2 C1 H4 122.659
N3 C1 H4 112.507 H5 N3 H6 119.443
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CCD/TZVP
 hartrees
Energy at 0K-169.519414
Energy at 298.15K-169.523340
HF Energy-168.996202
Nuclear repulsion energy71.364021
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/TZVP
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 3771 3575 38.05      
2 A 3639 3450 40.27      
3 A 3039 2881 85.72      
4 A 1864 1767 412.34      
5 A 1659 1572 63.39      
6 A 1477 1400 3.84      
7 A 1294 1227 123.26      
8 A 1098 1041 10.31      
9 A 1059 1004 2.70      
10 A 616 584 50.44      
11 A 579 549 21.71      
12 A 412 390 263.53      

Unscaled Zero Point Vibrational Energy (zpe) 10252.7 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 9719.5 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/TZVP
ABC
2.44101 0.38022 0.33010

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.164 0.387 0.002
O2 1.189 -0.247 0.008
N3 -1.087 -0.157 -0.055
H4 0.148 1.487 0.000
H5 -1.163 -1.146 0.114
H6 -1.874 0.414 0.196

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20541.36541.10062.03072.0470
O21.20542.27892.02312.52043.1390
N31.36542.27892.05721.00641.0041
H41.10062.02312.05722.94382.2970
H52.03072.52041.00642.94381.7164
H62.04703.13901.00412.29701.7164

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.977 C1 N3 H6 118.729
O2 C1 N3 124.746 O2 C1 H4 122.579
N3 C1 H4 112.629 H5 N3 H6 117.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability