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: QCISD/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at QCISD/daug-cc-pVTZ
 hartrees
Energy at 0K-186.529795
Energy at 298.15K 
HF Energy-185.817070
Nuclear repulsion energy92.309192
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 QCISD/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/daug-cc-pVTZ
ABC
2.08011 0.18240 0.16769

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.085 -1.539 0.000
N2 -0.640 -0.488 0.000
C3 0.000 0.709 0.000
N4 0.459 1.774 0.000
H5 -0.419 -2.499 0.000
H6 1.174 -1.519 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27722.25023.33441.08351.0886
N21.27721.35772.51512.02252.0860
C32.25021.35771.15953.23502.5181
N43.33442.51511.15954.36183.3692
H51.08352.02253.23504.36181.8697
H61.08862.08602.51813.36921.8697

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 117.270 N2 C1 H5 117.675
N2 C1 H6 123.510 N2 C3 N4 175.204
H5 C1 H6 118.814
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability