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All results from a given calculation for CHONH2 (formamide)

using model chemistry: MP2=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-169.448666
Energy at 298.15K 
HF Energy-168.946044
Nuclear repulsion energy70.870155
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/6-31+G**
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' 3828 3595 63.80      
2 A' 3673 3449 59.06      
3 A' 3087 2899 86.92      
4 A' 1799 1690 444.08      
5 A' 1656 1556 49.20      
6 A' 1445 1357 6.17      
7 A' 1297 1218 117.70      
8 A' 1069 1004 5.70      
9 A' 567 533 9.94      
10 A" 1045 982 5.66      
11 A" 633 595 11.83      
12 A" 111i 105i 272.41      

Unscaled Zero Point Vibrational Energy (zpe) 9993.7 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 9386.1 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/6-31+G**
ABC
2.43139 0.37498 0.32488

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.423 0.000
O2 1.210 0.216 0.000
N3 -0.951 -0.551 0.000
H4 -0.428 1.434 0.000
H5 -0.667 -1.517 0.000
H6 -1.929 -0.325 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.22741.36091.09832.05122.0691
O21.22742.29262.04152.55453.1853
N31.36092.29262.05271.00671.0043
H41.09832.04152.05272.96082.3124
H52.05122.55451.00672.96081.7361
H62.06913.18531.00432.31241.7361

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.328 C1 N3 H6 121.306
O2 C1 N3 124.606 O2 C1 H4 122.655
N3 C1 H4 112.739 H5 N3 H6 119.367
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at MP2=FULL/6-31+G**
 hartrees
Energy at 0K-169.448671
Energy at 298.15K-169.452265
HF Energy-168.945969
Nuclear repulsion energy70.866097
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/6-31+G**
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 3824 3592 62.34      
2 A 3670 3447 57.34      
3 A 3087 2899 86.27      
4 A 1799 1689 438.97      
5 A 1657 1556 48.39      
6 A 1445 1357 5.91      
7 A 1298 1219 116.80      
8 A 1072 1007 5.94      
9 A 1045 982 5.12      
10 A 632 594 15.83      
11 A 567 533 9.76      
12 A 158 149 274.60      

Unscaled Zero Point Vibrational Energy (zpe) 10126.6 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 9510.9 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/6-31+G**
ABC
2.42674 0.37507 0.32500

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.156 0.393 0.001
O2 1.204 -0.247 0.003
N3 -1.087 -0.161 -0.020
H4 0.133 1.491 -0.000
H5 -1.176 -1.162 0.043
H6 -1.910 0.409 0.070

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.22761.36141.09842.04822.0670
O21.22762.29272.04112.55013.1824
N31.36142.29272.05421.00701.0045
H41.09842.04112.05422.95912.3131
H52.04822.55011.00702.95911.7339
H62.06703.18241.00452.31311.7339

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.955 C1 N3 H6 121.031
O2 C1 N3 124.566 O2 C1 H4 122.603
N3 C1 H4 112.822 H5 N3 H6 119.076
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability