return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for NH2CN (cyanamide)

using model chemistry: MP4=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 1A1

Conformer 1 (Cs)

Jump to S1C2
Vibrational Frequencies calculated at MP4=FULL/3-21G
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-147.416252
Energy at 298.15K-147.418021
HF Energy-147.078434
Nuclear repulsion energy58.389806
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 MP4=FULL/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3564 3488        
2 A1 2172 2126        
3 A1 1714 1677        
4 A1 1053 1031        
5 B1 467 457        
6 B1 134 131        
7 B2 3681 3603        
8 B2 1190 1165        
9 B2 426 417        

Unscaled Zero Point Vibrational Energy (zpe) 7200.1 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 7047.5 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 MP4=FULL/3-21G
ABC
10.99852 0.32742 0.31795

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.219
N2 0.000 0.000 1.411
N3 0.000 0.000 -1.129
H4 0.000 0.872 -1.642
H5 0.000 -0.872 -1.642

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.19181.34832.05552.0555
N21.19182.54003.17523.1752
N31.34832.54001.01171.0117
H42.05553.17521.01171.7440
H52.05553.17521.01171.7440

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.471 C1 N3 H5 120.471
N2 C1 N3 180.000 H4 N3 H5 119.059
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability