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All results from a given calculation for CHONH2 (formamide)

using model chemistry: MP2=FULL/6-311G*

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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-169.525688
Energy at 298.15K 
HF Energy-168.972061
Nuclear repulsion energy71.142747
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 MP2=FULL/6-311G*
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' 3805 3603 43.24      
2 A' 3659 3465 44.18      
3 A' 3014 2854 113.47      
4 A' 1838 1740 366.30      
5 A' 1681 1592 58.15      
6 A' 1442 1366 4.03      
7 A' 1300 1231 107.26      
8 A' 1076 1019 6.03      
9 A' 571 541 10.99      
10 A" 1053 997 2.36      
11 A" 654 619 17.41      
12 A" 216i 205i 289.80      

Unscaled Zero Point Vibrational Energy (zpe) 9937.3 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 9411.6 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 MP2=FULL/6-311G*
ABC
2.46273 0.37702 0.32697

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.419 0.000
O2 1.200 0.236 0.000
N3 -0.941 -0.565 0.000
H4 -0.453 1.427 0.000
H5 -0.641 -1.524 0.000
H6 -1.922 -0.357 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21391.36111.10542.04662.0727
O21.21392.28572.03742.54783.1779
N31.36112.28572.05091.00541.0029
H41.10542.03742.05092.95792.3114
H52.04662.54781.00542.95791.7328
H62.07273.17791.00292.31141.7328

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.960 C1 N3 H6 121.773
O2 C1 N3 125.060 O2 C1 H4 122.845
N3 C1 H4 112.096 H5 N3 H6 119.267
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-169.525763
Energy at 298.15K-169.529563
HF Energy-168.971948
Nuclear repulsion energy71.115471
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 MP2=FULL/6-311G*
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 3790 3589 38.23      
2 A 3648 3455 38.58      
3 A 3016 2856 111.44      
4 A 1836 1739 349.48      
5 A 1683 1594 56.32      
6 A 1444 1368 3.79      
7 A 1302 1233 103.10      
8 A 1087 1030 7.99      
9 A 1050 994 1.59      
10 A 647 613 35.76      
11 A 573 542 10.69      
12 A 293 277 294.00      

Unscaled Zero Point Vibrational Energy (zpe) 10184.4 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 9645.7 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 MP2=FULL/6-311G*
ABC
2.44702 0.37691 0.32720

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.162 0.387 0.002
O2 1.197 -0.246 0.006
N3 -1.089 -0.158 -0.041
H4 0.136 1.492 -0.002
H5 -1.168 -1.154 0.082
H6 -1.896 0.409 0.146

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21371.36441.10532.03672.0626
O21.21372.28792.03622.53463.1647
N31.36442.28792.05521.00631.0040
H41.10532.03622.05522.95092.3075
H52.03672.53461.00632.95091.7249
H62.06263.16471.00402.30751.7249

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.631 C1 N3 H6 120.360
O2 C1 N3 125.001 O2 C1 H4 122.747
N3 C1 H4 112.222 H5 N3 H6 118.191
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability