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

using model chemistry: QCISD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at QCISD/TZVP
 hartrees
Energy at 0K-186.424260
Energy at 298.15K 
HF Energy-185.806198
Nuclear repulsion energy92.244416
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/TZVP
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' 3249 3103 6.49      
2 A' 3126 2987 14.53      
3 A' 2315 2211 24.24      
4 A' 1710 1633 24.08      
5 A' 1535 1466 15.73      
6 A' 1264 1208 7.17      
7 A' 939 897 5.80      
8 A' 635 607 2.02      
9 A' 256 244 6.18      
10 A" 1106 1056 16.44      
11 A" 775 740 0.68      
12 A" 361 345 10.23      

Unscaled Zero Point Vibrational Energy (zpe) 8635.2 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 8249.2 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 QCISD/TZVP
ABC
2.04594 0.18273 0.16775

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.082 -1.537 0.000
N2 -0.648 -0.487 0.000
C3 0.000 0.709 0.000
N4 0.470 1.770 0.000
H5 -0.418 -2.498 0.000
H6 1.171 -1.520 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27842.24713.32971.08371.0893
N21.27841.36002.51882.02412.0920
C32.24711.36001.16083.23412.5182
N43.32972.51881.16084.35973.3646
H51.08372.02413.23414.35971.8661
H61.08932.09202.51823.36461.8661

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 116.755 N2 C1 H5 117.706
N2 C1 H6 123.944 N2 C3 N4 175.428
H5 C1 H6 118.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability