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: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-186.651884
Energy at 298.15K 
HF Energy-186.651884
Nuclear repulsion energy91.386718
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/6-31+G**
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' 3142 3106 5.14 100.18 0.60 0.75
2 A' 3013 2979 18.09 110.16 0.15 0.26
3 A' 2208 2183 24.03 218.33 0.28 0.43
4 A' 1646 1627 18.80 60.25 0.20 0.34
5 A' 1460 1443 7.96 26.65 0.44 0.62
6 A' 1182 1169 8.52 4.19 0.74 0.85
7 A' 947 937 6.11 2.73 0.00 0.00
8 A' 592 586 2.27 4.55 0.29 0.45
9 A' 240 237 5.46 10.88 0.55 0.71
10 A" 1035 1023 24.93 0.64 0.75 0.86
11 A" 750 742 0.81 4.65 0.75 0.86
12 A" 345 341 6.03 0.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8279.4 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 8185.0 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/6-31+G**
ABC
2.29496 0.17503 0.16262

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.117 -1.578 0.000
N2 -0.589 -0.497 0.000
C3 0.000 0.709 0.000
N4 0.375 1.831 0.000
H5 -0.421 -2.533 0.000
H6 1.219 -1.591 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.29092.29013.41851.09631.1022
N21.29091.34192.51902.04352.1129
C32.29011.34191.18263.26972.6033
N43.41852.51901.18264.43613.5246
H51.09632.04353.26974.43611.8912
H61.10222.11292.60333.52461.8912

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 120.866 N2 C1 H5 117.515
N2 C1 H6 123.804 N2 C3 N4 172.452
H5 C1 H6 118.681
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.126      
2 N -0.192      
3 C 0.377      
4 N -0.410      
5 H 0.179      
6 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.566 -4.409 0.000 4.445
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.020 -2.522 0.000
y -2.522 -24.202 0.000
z 0.000 0.000 -23.153
Traceless
 xyz
x -0.343 -2.522 0.000
y -2.522 -0.616 0.000
z 0.000 0.000 0.959
Polar
3z2-r21.917
x2-y20.182
xy-2.522
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.277 0.421 0.000
y 0.421 9.546 0.000
z 0.000 0.000 3.018


<r2> (average value of r2) Å2
<r2> 72.110
(<r2>)1/2 8.492