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 H2CNCN (cyanamide, methylene)

using model chemistry: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-186.783692
Energy at 298.15K 
HF Energy-186.552483
Nuclear repulsion energy92.367228
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 B2PLYP/cc-pVTZ
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' 3218 3087 4.64 82.69 0.58 0.74
2 A' 3096 2970 16.23 98.59 0.12 0.21
3 A' 2245 2154 21.35 175.01 0.27 0.42
4 A' 1685 1616 23.17 41.20 0.22 0.36
5 A' 1508 1447 16.04 27.46 0.40 0.57
6 A' 1234 1184 9.97 3.14 0.74 0.85
7 A' 947 909 6.01 1.18 0.06 0.11
8 A' 629 603 4.25 3.02 0.21 0.34
9 A' 252 242 5.70 8.29 0.50 0.67
10 A" 1103 1059 18.23 0.29 0.75 0.86
11 A" 780 749 1.23 3.56 0.75 0.86
12 A" 371 356 8.33 0.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8533.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8187.4 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 B2PLYP/cc-pVTZ
ABC
2.20310 0.18062 0.16693

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.091 -1.551 0.000
N2 -0.614 -0.487 0.000
C3 0.000 0.708 0.000
N4 0.429 1.789 0.000
H5 -0.430 -2.501 0.000
H6 1.178 -1.552 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27612.26053.35731.08261.0876
N21.27611.34322.50382.02192.0847
C32.26051.34321.16363.23682.5484
N43.35732.50381.16364.37483.4241
H51.08262.02193.23684.37481.8667
H61.08762.08472.54843.42411.8667

picture of cyanamide, methylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 119.293 N2 C1 H5 117.776
N2 C1 H6 123.561 N2 C3 N4 174.452
H5 C1 H6 118.663
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.069      
2 N -0.095      
3 C -0.018      
4 N -0.085      
5 H 0.150      
6 H 0.118      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.441 -4.398 0.000 4.420
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.893 -2.663 -0.001
y -2.663 -23.795 0.001
z -0.001 0.001 -22.865
Traceless
 xyz
x -0.563 -2.663 -0.001
y -2.663 -0.416 0.001
z -0.001 0.001 0.979
Polar
3z2-r21.959
x2-y2-0.098
xy-2.663
xz-0.001
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.033 0.324 0.000
y 0.324 8.277 -0.001
z 0.000 -0.001 2.934


<r2> (average value of r2) Å2
<r2> 70.407
(<r2>)1/2 8.391