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All results from a given calculation for CHONH2 (formamide)

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-169.598633
Energy at 298.15K 
HF Energy-168.995618
Nuclear repulsion energy71.100393
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 CCSD(T)=FULL/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' 3755 3590        
2 A' 3612 3453        
3 A' 2997 2865        
4 A' 1797 1717        
5 A' 1632 1560        
6 A' 1445 1382        
7 A' 1272 1216        
8 A' 1055 1009        
9 A' 570 545        
10 A" 1025 980        
11 A" 612 585        
12 A" 354i 338i        

Unscaled Zero Point Vibrational Energy (zpe) 9709.2 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 9282.0 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 CCSD(T)=FULL/TZVP
ABC
2.44551 0.37737 0.32692

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.421 0.000
O2 1.200 0.232 0.000
N3 -0.941 -0.563 0.000
H4 -0.447 1.429 0.000
H5 -0.645 -1.526 0.000
H6 -1.922 -0.346 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21531.36221.10272.05172.0700
O21.21532.28472.03652.54933.1760
N31.36222.28472.05311.00741.0050
H41.10272.03652.05312.96232.3086
H52.05172.54931.00742.96231.7389
H62.07003.17601.00502.30861.7389

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.207 C1 N3 H6 121.229
O2 C1 N3 124.754 O2 C1 H4 122.867
N3 C1 H4 112.378 H5 N3 H6 119.564
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-169.599011
Energy at 298.15K-169.602930
HF Energy-168.995128
Nuclear repulsion energy71.041665
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 CCSD(T)=FULL/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 3724 3561        
2 A 3591 3433        
3 A 3000 2868        
4 A 1800 1721        
5 A 1634 1562        
6 A 1449 1386        
7 A 1275 1219        
8 A 1076 1028        
9 A 1031 985        
10 A 613 586        
11 A 568 543        
12 A 425 406        

Unscaled Zero Point Vibrational Energy (zpe) 10092.8 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 9648.7 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 CCSD(T)=FULL/TZVP
ABC
2.41715 0.37691 0.32725

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.162 0.390 0.003
O2 1.196 -0.247 0.008
N3 -1.091 -0.159 -0.057
H4 0.140 1.492 -0.001
H5 -1.161 -1.150 0.118
H6 -1.879 0.411 0.203

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21421.36971.10252.03392.0515
O21.21422.28952.03462.52603.1508
N31.36972.28952.06071.00921.0071
H41.10252.03462.06072.94802.2997
H52.03392.52601.00922.94801.7212
H62.05153.15081.00712.29971.7212

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.691 C1 N3 H6 118.542
O2 C1 N3 124.661 O2 C1 H4 122.800
N3 C1 H4 112.483 H5 N3 H6 117.220
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability