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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B2PLYP=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B2PLYP=FULL/6-311G*
 hartrees
Energy at 0K-187.907628
Energy at 298.15K-187.911701
HF Energy-187.686553
Nuclear repulsion energy101.899776
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 B2PLYP=FULL/6-311G*
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 3649 3649 11.88      
2 A 3563 3563 2.11      
3 A 2365 2365 0.29      
4 A 1721 1721 13.82      
5 A 1238 1238 0.12      
6 A 823 823 5.51      
7 A 609 609 156.95      
8 A 419 419 0.01      
9 A 403 403 30.17      
10 A 200 200 21.66      
11 B 3649 3649 11.37      
12 B 3566 3566 3.64      
13 B 1721 1721 32.65      
14 B 1375 1375 95.49      
15 B 1237 1237 0.16      
16 B 667 667 385.24      
17 B 416 416 15.97      
18 B 200 200 24.17      

Unscaled Zero Point Vibrational Energy (zpe) 13909.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13909.8 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 B2PLYP=FULL/6-311G*
ABC
5.19335 0.11929 0.11927

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 0.605 0.058
C2 -0.002 -0.605 0.058
N3 -0.002 1.955 -0.086
N4 0.002 -1.955 -0.086
H5 -0.336 2.471 0.714
H6 0.849 2.349 -0.458
H7 0.336 -2.471 0.714
H8 -0.849 -2.349 -0.458

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21031.35802.56462.00612.00613.16253.1172
C21.21032.56461.35803.16253.11722.00612.0061
N31.35802.56463.91081.00871.00904.51054.4024
N42.56461.35803.91084.51054.40241.00871.0090
H52.00613.16251.00874.51051.67134.98664.9864
H62.00613.11721.00904.40241.67134.98644.9951
H73.16252.00614.51051.00874.98664.98641.6713
H83.11722.00614.40241.00904.98644.99511.6713

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 173.868 C1 N3 H5 115.110
C1 N3 H6 115.093 C2 C1 N3 173.868
C2 N4 H7 115.110 C2 N4 H8 115.093
H5 N3 H6 111.850 H7 N4 H8 111.850
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability