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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-169.551064
Energy at 298.15K 
HF Energy-168.980351
Nuclear repulsion energy71.138283
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' 3802 3606 50.15      
2 A' 3654 3467 49.28      
3 A' 3011 2856 112.66      
4 A' 1835 1741 352.32      
5 A' 1630 1546 62.96      
6 A' 1443 1369 3.49      
7 A' 1287 1221 105.98      
8 A' 1058 1004 4.18      
9 A' 566 537 11.08      
10 A" 1061 1006 1.77      
11 A" 646 613 14.03      
12 A" 249i 236i 245.21      

Unscaled Zero Point Vibrational Energy (zpe) 9872.0 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 9364.6 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
2.45861 0.37715 0.32699

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 0.420 0.000
O2 1.199 0.239 0.000
N3 -0.939 -0.567 0.000
H4 -0.462 1.424 0.000
H5 -0.637 -1.527 0.000
H6 -1.921 -0.357 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21291.36231.10572.04832.0718
O21.21292.28542.04072.54783.1765
N31.36232.28542.04791.00641.0038
H41.10572.04072.04792.95662.3025
H52.04832.54781.00642.95661.7371
H62.07183.17651.00382.30251.7371

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.944 C1 N3 H6 121.490
O2 C1 N3 125.013 O2 C1 H4 123.254
N3 C1 H4 111.733 H5 N3 H6 119.566
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-169.551199
Energy at 298.15K-169.555038
HF Energy-168.980166
Nuclear repulsion energy71.104439
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 3780 3586 42.34      
2 A 3639 3452 40.97      
3 A 3013 2858 110.01      
4 A 1834 1740 331.71      
5 A 1632 1548 58.93      
6 A 1445 1370 2.84      
7 A 1288 1222 101.29      
8 A 1078 1023 5.55      
9 A 1051 997 1.99      
10 A 637 604 36.66      
11 A 568 538 10.62      
12 A 331 314 254.20      

Unscaled Zero Point Vibrational Energy (zpe) 10146.8 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 9625.3 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 MP2=FULL/6-311G**
ABC
2.43786 0.37700 0.32734

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 0.001
O2 1.197 -0.245 0.007
N3 -1.089 -0.159 -0.048
H4 0.130 1.493 -0.001
H5 -1.164 -1.153 0.097
H6 -1.888 0.411 0.172

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21251.36681.10552.03522.0577
O21.21252.28842.03922.53063.1581
N31.36682.28842.05331.00771.0053
H41.10552.03922.05332.94682.2960
H52.03522.53061.00772.94681.7255
H62.05773.15811.00532.29601.7255

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.181 C1 N3 H6 119.543
O2 C1 N3 124.944 O2 C1 H4 123.151
N3 C1 H4 111.871 H5 N3 H6 117.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability