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: CCSD=FULL/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 CCSD=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-186.605985
Energy at 298.15K 
HF Energy-185.814160
Nuclear repulsion energy92.607287
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 CCSD=FULL/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' 3246 3246 2.96      
2 A' 3126 3126 12.38      
3 A' 2339 2339 30.94      
4 A' 1728 1728 26.89      
5 A' 1520 1520 17.42      
6 A' 1252 1252 9.84      
7 A' 957 957 5.98      
8 A' 643 643 4.04      
9 A' 259 259 6.59      
10 A" 1115 1115 18.16      
11 A" 788 788 1.08      
12 A" 383 383 10.01      

Unscaled Zero Point Vibrational Energy (zpe) 8677.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8677.5 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 CCSD=FULL/6-311+G(3df,2p)
ABC
2.11840 0.18311 0.16854

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.084 -1.537 0.000
N2 -0.633 -0.486 0.000
C3 0.000 0.708 0.000
N4 0.454 1.771 0.000
H5 -0.422 -2.494 0.000
H6 1.171 -1.522 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27242.24713.32861.08191.0870
N21.27241.35142.50452.01912.0802
C32.24711.35141.15533.22972.5192
N43.32862.50451.15534.35343.3702
H51.08192.01913.22974.35341.8654
H61.08702.08022.51923.37021.8654

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 117.801 N2 C1 H5 117.864
N2 C1 H6 123.492 N2 C3 N4 175.212
H5 C1 H6 118.644
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability