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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: PBEPBE/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 PBEPBE/3-21G*
Rotational Constants (cm-1) from geometry optimized at PBEPBE/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/3-21G*
 hartrees
Energy at 0K-147.787120
Energy at 298.15K-147.789279
HF Energy-147.787120
Nuclear repulsion energy58.625480
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 PBEPBE/3-21G*
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 3466 3304 47.33      
2 A1 2245 2140 69.75      
3 A1 1628 1552 65.56      
4 A1 1097 1046 7.81      
5 B1 550 524 18.60      
6 B1 358 341 398.29      
7 B2 3569 3403 61.11      
8 B2 1141 1088 4.94      
9 B2 461 439 1.97      

Unscaled Zero Point Vibrational Energy (zpe) 7256.4 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 6919.0 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 PBEPBE/3-21G*
ABC
10.84898 0.33143 0.32160

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.216
N2 0.000 0.000 1.403
N3 0.000 0.000 -1.120
H4 0.000 0.878 -1.640
H5 0.000 -0.878 -1.640

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.18751.33562.05332.0533
N21.18752.52313.16773.1677
N31.33562.52311.02071.0207
H42.05333.16771.02071.7560
H52.05333.16771.02071.7560

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.661 C1 N3 H5 120.661
N2 C1 N3 180.000 H4 N3 H5 118.679
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.562      
2 N -0.444      
3 N -0.802      
4 H 0.342      
5 H 0.342      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -4.645 4.645
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.215 0.000 0.000
y 0.000 -14.448 0.000
z 0.000 0.000 -17.095
Traceless
 xyz
x -2.444 0.000 0.000
y 0.000 3.207 0.000
z 0.000 0.000 -0.764
Polar
3z2-r2-1.527
x2-y2-3.767
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.063 0.000 0.000
y 0.000 1.783 0.000
z 0.000 0.000 4.571


<r2> (average value of r2) Å2
<r2> 40.123
(<r2>)1/2 6.334