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All results from a given calculation for H2CNCN (cyanamide, methylene)

using model chemistry: MP2=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at MP2=FULL/3-21G
 hartrees
Energy at 0K-185.107123
Energy at 298.15K 
HF Energy-184.688453
Nuclear repulsion energy90.296784
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 MP2=FULL/3-21G
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' 3247 3100 13.09 78.05 0.54 0.70
2 A' 3121 2979 13.68 84.27 0.14 0.25
3 A' 2086 1992 1.31 46.97 0.31 0.48
4 A' 1646 1571 6.78 5.81 0.75 0.86
5 A' 1515 1446 14.06 18.07 0.35 0.52
6 A' 1256 1200 3.25 4.64 0.71 0.83
7 A' 844 805 4.52 1.46 0.04 0.07
8 A' 604 577 1.90 1.32 0.56 0.72
9 A' 254 243 6.85 6.53 0.55 0.71
10 A" 1116 1066 28.75 0.43 0.75 0.86
11 A" 797 761 0.28 9.14 0.75 0.86
12 A" 382 365 7.15 0.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8433.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 8052.0 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 MP2=FULL/3-21G
ABC
2.19569 0.17075 0.15843

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.101 -1.595 0.000
N2 -0.612 -0.507 0.000
C3 0.000 0.727 0.000
N4 0.415 1.846 0.000
H5 -0.423 -2.544 0.000
H6 1.191 -1.622 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.30102.32363.45511.08421.0906
N21.30101.37662.56702.04582.1205
C32.32361.37661.19403.29752.6337
N43.45512.56701.19404.46913.5540
H51.08422.04583.29754.46911.8593
H61.09062.12052.63373.55401.8593

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 120.380 N2 C1 H5 117.826
N2 C1 H6 124.672 N2 C3 N4 173.968
H5 C1 H6 117.503
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability