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: PBEPBE/STO-3G

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 PBEPBE/STO-3G
 hartrees
Energy at 0K-146.667540
Energy at 298.15K-146.669609
Nuclear repulsion energy56.609030
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/STO-3G
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' 3440 3143 5.58      
2 A' 2293 2095 3.28      
3 A' 1730 1581 15.57      
4 A' 1040 950 8.39      
5 A' 650 594 164.32      
6 A' 429 392 11.78      
7 A" 3620 3307 2.62      
8 A" 1271 1162 1.21      
9 A" 374 342 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 7423.6 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 6782.2 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/STO-3G
ABC
8.72359 0.30915 0.30357

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.226 0.000
N2 0.148 1.433 0.000
N3 0.003 -1.188 0.000
H4 -0.528 -1.538 0.853
H5 -0.528 -1.538 -0.853

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21681.41352.02912.0291
N21.21682.62523.16453.1645
N31.41352.62521.06421.0642
H42.02913.16451.06421.7065
H52.02913.16451.06421.7065

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 109.148 C1 N3 H5 109.148
N2 C1 N3 172.891 H4 N3 H5 106.607
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.098      
2 N -0.191      
3 N -0.338      
4 H 0.215      
5 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.841 -3.116 0.000 3.619
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.755 2.331 0.000
y 2.331 -17.694 0.000
z 0.000 0.000 -14.101
Traceless
 xyz
x 0.143 2.331 0.000
y 2.331 -2.766 0.000
z 0.000 0.000 2.623
Polar
3z2-r25.247
x2-y21.939
xy2.331
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.702 0.447 0.000
y 0.447 3.347 0.000
z 0.000 0.000 1.228


<r2> (average value of r2) Å2
<r2> 41.362
(<r2>)1/2 6.431

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-146.663755
Energy at 298.15K 
HF Energy-146.663755
Nuclear repulsion energy57.205126
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/STO-3G
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 3641 3326 47.90      
2 A1 2324 2123 17.68      
3 A1 1660 1516 28.74      
4 A1 1100 1005 7.16      
5 B1 456 417 0.10      
6 B1 455i 415i 307.29      
7 B2 3829 3498 27.27      
8 B2 1131 1033 2.63      
9 B2 376 343 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 7030.5 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 6423.1 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/STO-3G
ABC
10.49265 0.31509 0.30591

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.221
N2 0.000 0.000 1.440
N3 0.000 0.000 -1.148
H4 0.000 0.893 -1.685
H5 0.000 -0.893 -1.685

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21891.36832.10422.1042
N21.21892.58723.24933.2493
N31.36832.58721.04191.0419
H42.10423.24931.04191.7856
H52.10423.24931.04191.7856

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 121.031 C1 N3 H5 121.031
N2 C1 N3 180.000 H4 N3 H5 117.938
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.111      
2 N -0.205      
3 N -0.369      
4 H 0.232      
5 H 0.232      


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 -4.002 4.002
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.611 0.000 0.000
y 0.000 -13.587 0.000
z 0.000 0.000 -15.649
Traceless
 xyz
x -1.993 0.000 0.000
y 0.000 2.543 0.000
z 0.000 0.000 -0.550
Polar
3z2-r2-1.099
x2-y2-3.024
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.457 0.000 0.000
y 0.000 1.174 0.000
z 0.000 0.000 3.416


<r2> (average value of r2) Å2
<r2> 40.833
(<r2>)1/2 6.390