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: B3PW91/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 B3PW91/cc-pVTZ
 hartrees
Energy at 0K-186.847905
Energy at 298.15K 
HF Energy-186.847905
Nuclear repulsion energy92.671156
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/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' 3189 3066 4.97      
2 A' 3070 2953 16.73      
3 A' 2314 2225 32.95      
4 A' 1711 1646 30.40      
5 A' 1498 1440 13.86      
6 A' 1222 1175 10.86      
7 A' 967 930 5.97      
8 A' 635 611 5.28      
9 A' 252 243 5.76      
10 A" 1096 1054 18.82      
11 A" 781 751 1.76      
12 A" 376 362 8.49      

Unscaled Zero Point Vibrational Energy (zpe) 8555.4 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 8226.8 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/cc-pVTZ
ABC
2.28424 0.18077 0.16751

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.091 -1.552 0.000
N2 -0.598 -0.485 0.000
C3 0.000 0.708 0.000
N4 0.414 1.789 0.000
H5 -0.441 -2.500 0.000
H6 1.182 -1.569 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27092.26283.35731.08621.0910
N21.27091.33452.48882.02112.0842
C32.26281.33451.15733.23812.5658
N43.35732.48881.15734.37313.4449
H51.08622.02113.23814.37311.8707
H61.09102.08422.56583.44491.8707

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 120.549 N2 C1 H5 117.844
N2 C1 H6 123.693 N2 C3 N4 174.335
H5 C1 H6 118.463
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.026      
2 N -0.108      
3 C 0.022      
4 N -0.117      
5 H 0.129      
6 H 0.100      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.424 -4.460 0.000 4.480
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.517 -2.569 0.000
y -2.569 -23.593 0.000
z 0.000 0.000 -22.629
Traceless
 xyz
x -0.406 -2.569 0.000
y -2.569 -0.520 0.000
z 0.000 0.000 0.926
Polar
3z2-r21.852
x2-y20.076
xy-2.569
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.024 0.344 0.000
y 0.344 8.504 0.000
z 0.000 0.000 2.940


<r2> (average value of r2) Å2
<r2> 70.097
(<r2>)1/2 8.372