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: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-186.808120
Energy at 298.15K 
HF Energy-186.808120
Nuclear repulsion energy92.351183
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 mPW1PW91/6-31G**
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' 3240 3083 6.59 83.85 0.59 0.74
2 A' 3116 2965 13.76 89.51 0.13 0.23
3 A' 2352 2238 32.10 160.25 0.31 0.48
4 A' 1743 1659 34.35 44.04 0.26 0.41
5 A' 1519 1446 10.81 26.02 0.44 0.61
6 A' 1236 1176 8.92 4.91 0.75 0.86
7 A' 981 933 5.63 1.07 0.04 0.07
8 A' 626 596 4.39 2.98 0.33 0.50
9 A' 248 236 6.03 8.94 0.53 0.69
10 A" 1103 1049 20.30 0.08 0.75 0.86
11 A" 784 746 1.40 8.18 0.75 0.86
12 A" 372 354 9.58 0.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8659.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 8239.8 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 mPW1PW91/6-31G**
ABC
2.23339 0.18013 0.16668

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.093 -1.553 0.000
N2 -0.607 -0.487 0.000
C3 0.000 0.708 0.000
N4 0.420 1.793 0.000
H5 -0.434 -2.504 0.000
H6 1.185 -1.567 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27512.26253.36251.08711.0919
N21.27511.34002.50122.02462.0918
C32.26251.34001.16443.24092.5644
N43.36252.50121.16444.38173.4462
H51.08712.02463.24094.38171.8700
H61.09192.09182.56443.44621.8700

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 119.789 N2 C1 H5 117.764
N2 C1 H6 124.005 N2 C3 N4 174.222
H5 C1 H6 118.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.034      
2 N -0.385      
3 C 0.536      
4 N -0.455      
5 H 0.172      
6 H 0.166      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.536 -4.368 0.000 4.401
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.313 -2.621 0.000
y -2.621 -23.178 0.000
z 0.000 0.000 -22.383
Traceless
 xyz
x -0.532 -2.621 0.000
y -2.621 -0.330 0.000
z 0.000 0.000 0.862
Polar
3z2-r21.724
x2-y2-0.135
xy-2.621
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.454 0.374 0.000
y 0.374 8.016 0.000
z 0.000 0.000 2.066


<r2> (average value of r2) Å2
<r2> 70.176
(<r2>)1/2 8.377