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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B2PLYP=FULLultrafine/6-31G(2df,p)

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=FULLultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-187.897708
Energy at 298.15K 
HF Energy-187.662526
Nuclear repulsion energy102.089847
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=FULLultrafine/6-31G(2df,p)
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 3651 3651 18.89      
2 A 3564 3564 2.79      
3 A 2394 2394 0.12      
4 A 1667 1667 9.33      
5 A 1211 1211 0.00      
6 A 829 829 5.63      
7 A 606 606 112.47      
8 A 468 468 8.33      
9 A 383 383 22.12      
10 A 228 228 18.92      
11 B 3651 3651 18.06      
12 B 3567 3567 8.99      
13 B 1666 1666 19.84      
14 B 1377 1377 92.07      
15 B 1212 1212 0.06      
16 B 663 663 317.43      
17 B 474 474 25.44      
18 B 229 229 21.06      

Unscaled Zero Point Vibrational Energy (zpe) 13919.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13919.7 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=FULLultrafine/6-31G(2df,p)
ABC
5.17682 0.11982 0.11981

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 0.604 0.053
C2 -0.001 -0.604 0.053
N3 -0.001 1.951 -0.085
N4 0.001 -1.951 -0.085
H5 -0.326 2.461 0.722
H6 0.856 2.343 -0.446
H7 0.326 -2.461 0.722
H8 -0.856 -2.343 -0.446

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.20791.35452.55912.00042.00093.15363.1090
C21.20792.55911.35453.15363.10902.00042.0009
N31.35452.55913.90271.00851.00874.49724.3931
N42.55911.35453.90274.49724.39311.00851.0087
H52.00043.15361.00854.49721.66594.96424.9717
H62.00093.10901.00874.39311.66594.97174.9882
H73.15362.00044.49721.00854.96424.97171.6659
H83.10902.00094.39311.00874.97174.98821.6659

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.126 C1 N3 H5 114.889
C1 N3 H6 114.917 C2 C1 N3 174.126
C2 N4 H7 114.889 C2 N4 H8 114.917
H5 N3 H6 111.352 H7 N4 H8 111.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability