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: CCD/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at CCD/6-311+G(3df,2p)
 hartrees
Energy at 0K-186.506834
Energy at 298.15K 
HF Energy-185.814128
Nuclear repulsion energy92.537226
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 CCD/6-311+G(3df,2p)
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' 3241 3056 2.98      
2 A' 3120 2943 10.78      
3 A' 2351 2217 27.27      
4 A' 1738 1639 21.18      
5 A' 1522 1435 15.44      
6 A' 1253 1182 9.72      
7 A' 953 899 5.69      
8 A' 641 605 3.96      
9 A' 258 243 6.56      
10 A" 1115 1051 19.25      
11 A" 791 746 0.96      
12 A" 378 356 9.97      

Unscaled Zero Point Vibrational Energy (zpe) 8680.1 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 8186.2 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 CCD/6-311+G(3df,2p)
ABC
2.10544 0.18298 0.16835

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.086 -1.537 0.000
N2 -0.635 -0.489 0.000
C3 0.000 0.709 0.000
N4 0.453 1.771 0.000
H5 -0.417 -2.496 0.000
H6 1.174 -1.517 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27222.24773.32851.08341.0882
N21.27221.35602.50862.01922.0809
C32.24771.35601.15483.23242.5167
N43.32852.50861.15484.35543.3663
H51.08342.01923.23244.35541.8685
H61.08822.08092.51673.36631.8685

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 117.531 N2 C1 H5 117.785
N2 C1 H6 123.486 N2 C3 N4 175.176
H5 C1 H6 118.728
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability