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All results from a given calculation for CHONH2 (formamide)

using model chemistry: CCD/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-169.529499
Energy at 298.15K 
HF Energy-168.952005
Nuclear repulsion energy71.478144
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/6-31G(2df,p)
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' 3830 3627 55.82      
2 A' 3686 3492 56.82      
3 A' 3032 2872 77.50      
4 A' 1891 1791 375.23      
5 A' 1648 1561 73.42      
6 A' 1467 1390 4.04      
7 A' 1300 1232 116.40      
8 A' 1078 1022 5.12      
9 A' 573 543 12.18      
10 A" 1092 1035 0.14      
11 A" 645 611 15.69      
12 A" 124i 117i 230.67      

Unscaled Zero Point Vibrational Energy (zpe) 10059.5 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 9528.3 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/6-31G(2df,p)
ABC
2.47914 0.38089 0.33017

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.418 0.000
O2 1.191 0.242 0.000
N3 -0.933 -0.568 0.000
H4 -0.459 1.421 0.000
H5 -0.633 -1.526 0.000
H6 -1.912 -0.363 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20421.35741.10352.04462.0652
O21.20422.27352.02832.54083.1618
N31.35742.27352.04541.00391.0008
H41.10352.02832.04542.95292.3009
H52.04462.54081.00392.95291.7295
H62.06523.16181.00082.30091.7295

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.217 C1 N3 H6 121.534
O2 C1 N3 125.019 O2 C1 H4 122.959
N3 C1 H4 112.022 H5 N3 H6 119.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-169.529515
Energy at 298.15K-169.533158
HF Energy-168.951956
Nuclear repulsion energy71.456061
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/6-31G(2df,p)
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 3820 3618 52.63      
2 A 3679 3485 52.65      
3 A 3034 2873 76.88      
4 A 1891 1791 365.50      
5 A 1649 1562 70.27      
6 A 1467 1390 3.79      
7 A 1300 1231 113.43      
8 A 1096 1038 1.76      
9 A 1078 1021 4.09      
10 A 639 605 22.68      
11 A 573 542 11.40      
12 A 178 168 241.12      

Unscaled Zero Point Vibrational Energy (zpe) 10201.2 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 9662.6 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 CCD/6-31G(2df,p)
ABC
2.47057 0.38070 0.33022

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.164 0.385 0.001
O2 1.190 -0.245 0.005
N3 -1.083 -0.156 -0.031
H4 0.138 1.488 0.001
H5 -1.175 -1.152 0.064
H6 -1.893 0.415 0.108

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20411.35961.10342.03912.0601
O21.20412.27512.02752.53363.1550
N31.35962.27512.04791.00451.0015
H41.10342.02752.04792.94882.2990
H52.03912.53361.00452.94881.7249
H62.06013.15501.00152.29901.7249

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.434 C1 N3 H6 120.760
O2 C1 N3 124.998 O2 C1 H4 122.907
N3 C1 H4 112.083 H5 N3 H6 118.605
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability