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: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-186.640288
Energy at 298.15K 
HF Energy-186.640288
Nuclear repulsion energy91.407307
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 PBEPBEultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3144 3092 9.17 91.82 0.57 0.73
2 A' 3023 2974 18.40 96.91 0.14 0.25
3 A' 2219 2183 15.58 148.31 0.33 0.49
4 A' 1657 1629 21.47 35.43 0.26 0.41
5 A' 1476 1451 6.86 28.11 0.44 0.61
6 A' 1192 1172 7.95 5.30 0.74 0.85
7 A' 950 934 5.17 2.29 0.07 0.13
8 A' 593 583 3.36 3.73 0.33 0.49
9 A' 238 234 4.99 8.89 0.52 0.68
10 A" 1030 1013 21.66 0.13 0.75 0.86
11 A" 753 741 0.90 7.32 0.75 0.86
12 A" 345 339 7.29 1.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8308.8 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 8171.7 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 PBEPBEultrafine/6-31G*
ABC
2.28605 0.17523 0.16275

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.113 -1.576 0.000
N2 -0.591 -0.496 0.000
C3 0.000 0.709 0.000
N4 0.380 1.829 0.000
H5 -0.424 -2.533 0.000
H6 1.216 -1.597 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.28962.28833.41541.09721.1027
N21.28961.34232.51942.04392.1157
C32.28831.34231.18233.26992.6070
N43.41542.51941.18234.43523.5259
H51.09722.04393.26994.43521.8880
H61.10272.11572.60703.52591.8880

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 120.783 N2 C1 H5 117.595
N2 C1 H6 124.169 N2 C3 N4 172.652
H5 C1 H6 118.236
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.128      
2 N -0.324      
3 C 0.499      
4 N -0.431      
5 H 0.195      
6 H 0.189      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.513 -4.159 0.000 4.190
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.157 -2.343 0.000
y -2.343 -23.381 0.000
z 0.000 0.000 -22.428
Traceless
 xyz
x -0.253 -2.343 0.000
y -2.343 -0.589 0.000
z 0.000 0.000 0.841
Polar
3z2-r21.683
x2-y20.224
xy-2.343
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.501 0.354 0.000
y 0.354 8.519 0.000
z 0.000 0.000 2.070


<r2> (average value of r2) Å2
<r2> 71.573
(<r2>)1/2 8.460