return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: CCD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
1 2 no C2V 1A1

Conformer 1 (Cs)

Jump to S1C2
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-148.358891
Energy at 298.15K-148.361183
HF Energy-147.905680
Nuclear repulsion energy58.855918
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*
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' 3572 3381 35.56      
2 A' 2396 2268 62.33      
3 A' 1699 1608 50.04      
4 A' 1091 1033 5.22      
5 A' 701 663 276.64      
6 A' 463 438 21.10      
7 A" 3670 3474 45.67      
8 A" 1246 1180 0.04      
9 A" 398 376 1.01      

Unscaled Zero Point Vibrational Energy (zpe) 7617.8 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 7210.3 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*
ABC
9.97828 0.33303 0.32565

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.223 0.000
N2 -0.042 1.389 0.000
N3 0.108 -1.129 0.000
H4 -0.229 -1.580 0.843
H5 -0.229 -1.580 -0.843

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16591.35632.00382.0038
N21.16592.52163.09143.0914
N31.35632.52161.01401.0140
H42.00383.09141.01401.6865
H52.00383.09141.01401.6865

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 114.656 C1 N3 H5 114.656
N2 C1 N3 177.524 H4 N3 H5 112.523
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-148.356346
Energy at 298.15K 
HF Energy-147.904287
Nuclear repulsion energy59.092187
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*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3675 3478 80.07      
2 A1 2405 2276 107.36      
3 A1 1668 1578 63.09      
4 A1 1140 1079 13.65      
5 B1 501 474 0.87      
6 B1 518i 490i 375.85      
7 B2 3794 3591 92.54      
8 B2 1165 1103 5.19      
9 B2 400 379 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 7114.2 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 6733.6 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*
ABC
11.09853 0.33565 0.32580

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.222
N2 0.000 0.000 1.391
N3 0.000 0.000 -1.117
H4 0.000 0.868 -1.627
H5 0.000 -0.868 -1.627

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16861.33882.04272.0427
N21.16862.50743.14003.1400
N31.33882.50741.00691.0069
H42.04273.14001.00691.7362
H52.04273.14001.00691.7362

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.447 C1 N3 H5 120.447
N2 C1 N3 180.000 H4 N3 H5 119.106
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability