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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: MP4=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP4=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-187.586878
Energy at 298.15K-187.590593
HF Energy-186.904547
Nuclear repulsion energy100.475486
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 MP4=FULL/aug-cc-pVDZ
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 3605 3516 0.00      
2 A 3507 3420 0.00      
3 A 2313 2255 0.00      
4 A 1638 1597 0.00      
5 A 1200 1171 0.00      
6 A 798 778 0.00      
7 A 636 620 0.00      
8 A 337 329 0.00      
9 A 325 317 0.00      
10 A 157 153 0.00      
11 B 3605 3516 0.00      
12 B 3509 3422 0.00      
13 B 1637 1597 0.00      
14 B 1327 1294 0.00      
15 B 1200 1170 0.00      
16 B 693 676 0.00      
17 B 329 321 0.00      
18 B 160 156 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13487.5 cm-1
Scaled (by 0.9752) Zero Point Vibrational Energy (zpe) 13153.0 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 MP4=FULL/aug-cc-pVDZ
ABC
4.98836 0.11586 0.11584

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.041 0.615 -0.003
C2 -0.041 -0.615 -0.003
N3 0.041 1.992 -0.060
N4 -0.041 -1.992 -0.060
H5 -0.243 2.433 0.813
H6 0.927 2.381 -0.378
H7 0.243 -2.433 0.813
H8 -0.927 -2.381 -0.378

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.23321.37782.60902.01232.01083.16153.1712
C21.23322.60901.37783.16153.17122.01232.0108
N31.37782.60903.98461.01841.01854.51424.4902
N42.60901.37783.98464.51424.49021.01841.0185
H52.01233.16151.01844.51421.67044.88945.0057
H62.01083.17121.01854.49021.67045.00575.1105
H73.16152.01234.51421.01844.88945.00571.6704
H83.17122.01084.49021.01855.00575.11051.6704

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.477 C1 N3 H5 113.384
C1 N3 H6 113.250 C2 C1 N3 175.477
C2 N4 H7 113.384 C2 N4 H8 113.250
H5 N3 H6 110.191 H7 N4 H8 110.191
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability