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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: MP2=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 MP2=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-187.535047
Energy at 298.15K-187.538865
HF Energy-186.905694
Nuclear repulsion energy100.826322
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/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 3648 3536 31.26      
2 A 3543 3434 1.14      
3 A 2362 2289 0.18      
4 A 1637 1587 9.85      
5 A 1200 1164 0.44      
6 A 809 784 6.79      
7 A 624 605 99.36      
8 A 349 338 1.35      
9 A 325 315 32.10      
10 A 183 177 14.47      
11 B 3648 3536 30.24      
12 B 3546 3436 14.18      
13 B 1638 1587 26.82      
14 B 1354 1312 107.52      
15 B 1200 1163 0.43      
16 B 674 653 270.69      
17 B 345 334 14.87      
18 B 185 180 17.12      

Unscaled Zero Point Vibrational Energy (zpe) 13635.4 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 13215.5 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/aug-cc-pVDZ
ABC
5.03797 0.11669 0.11667

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.615 0.038
C2 -0.006 -0.615 0.038
N3 -0.006 1.979 -0.076
N4 0.006 -1.979 -0.076
H5 -0.332 2.474 0.746
H6 0.849 2.385 -0.441
H7 0.332 -2.474 0.746
H8 -0.849 -2.385 -0.441

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.23101.36792.59662.01732.01783.18633.1561
C21.23102.59661.36793.18633.15612.01732.0178
N31.36792.59663.95721.01431.01444.54044.4589
N42.59661.36793.95724.54044.45891.01431.0144
H52.01733.18631.01434.54041.67784.99225.0281
H62.01783.15611.01444.45891.67785.02815.0626
H73.18632.01734.54041.01434.99225.02811.6778
H83.15612.01784.45891.01445.02815.06261.6778

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.104 C1 N3 H5 114.924
C1 N3 H6 114.959 C2 C1 N3 175.104
C2 N4 H7 114.924 C2 N4 H8 114.959
H5 N3 H6 111.586 H7 N4 H8 111.586
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability