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All results from a given calculation for H2CNCN (cyanamide, methylene)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-186.793996
Energy at 298.15K 
HF Energy-186.793996
Nuclear repulsion energy92.419849
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 B3PW91/6-31G(2df,p)
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' 3202 3078 5.74 78.62 0.59 0.75
2 A' 3083 2964 14.35 84.63 0.13 0.23
3 A' 2321 2231 27.43 165.32 0.29 0.45
4 A' 1720 1654 31.73 46.64 0.25 0.40
5 A' 1500 1442 10.59 23.56 0.43 0.60
6 A' 1220 1173 10.25 3.86 0.75 0.86
7 A' 969 932 5.20 1.35 0.01 0.02
8 A' 636 611 6.09 2.87 0.23 0.38
9 A' 253 243 5.58 8.27 0.49 0.65
10 A" 1090 1048 17.51 0.11 0.75 0.86
11 A" 786 755 1.85 5.60 0.75 0.86
12 A" 387 373 9.25 0.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8583.0 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 8251.7 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 B3PW91/6-31G(2df,p)
ABC
2.27413 0.17979 0.16661

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.091 -1.556 0.000
N2 -0.599 -0.485 0.000
C3 0.000 0.709 0.000
N4 0.416 1.795 0.000
H5 -0.443 -2.506 0.000
H6 1.184 -1.577 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27402.26733.36671.08891.0932
N21.27401.33642.49572.02652.0905
C32.26731.33641.16243.24522.5742
N43.36672.49571.16244.38523.4577
H51.08892.02653.24524.38521.8728
H61.09322.09052.57423.45771.8728

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 120.564 N2 C1 H5 117.892
N2 C1 H6 123.861 N2 C3 N4 174.317
H5 C1 H6 118.247
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.206      
2 N -0.215      
3 C 0.409      
4 N -0.348      
5 H 0.181      
6 H 0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.408 -4.345 0.000 4.365
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.060 -2.497 0.000
y -2.497 -23.195 0.000
z 0.000 0.000 -22.267
Traceless
 xyz
x -0.329 -2.497 0.000
y -2.497 -0.531 0.000
z 0.000 0.000 0.861
Polar
3z2-r21.721
x2-y20.134
xy-2.497
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.699 0.364 0.000
y 0.364 8.157 0.000
z 0.000 0.000 2.540


<r2> (average value of r2) Å2
<r2> 70.146
(<r2>)1/2 8.375