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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: MP3=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 MP3=FULL/6-311G*
 hartrees
Energy at 0K-187.606853
Energy at 298.15K-187.611027
HF Energy-186.916098
Nuclear repulsion energy101.810335
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 MP3=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 3708 3708 15.24      
2 A 3621 3621 2.97      
3 A 2445 2445 0.11      
4 A 1745 1745 18.42      
5 A 1266 1266 0.00      
6 A 834 834 14.91      
7 A 696 696 132.80      
8 A 421 421 0.72      
9 A 361 361 37.04      
10 A 217 217 18.44      
11 B 3708 3708 14.54      
12 B 3622 3622 9.19      
13 B 1745 1745 45.63      
14 B 1372 1372 87.01      
15 B 1265 1265 0.01      
16 B 753 753 407.81      
17 B 419 419 16.98      
18 B 217 217 21.15      

Unscaled Zero Point Vibrational Energy (zpe) 14206.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14206.2 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 MP3=FULL/6-311G*
ABC
5.10622 0.11906 0.11903

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 0.603 0.057
C2 -0.003 -0.603 0.057
N3 -0.003 1.957 -0.088
N4 0.003 -1.957 -0.088
H5 -0.326 2.459 0.722
H6 0.856 2.339 -0.448
H7 0.326 -2.459 0.722
H8 -0.856 -2.339 -0.448

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.20611.36212.56451.99891.99893.15033.1059
C21.20612.56451.36213.15033.10591.99891.9989
N31.36212.56453.91481.00631.00654.50234.3947
N42.56451.36213.91484.50234.39471.00631.0065
H51.99893.15031.00634.50231.66794.96164.9667
H61.99893.10591.00654.39471.66794.96674.9810
H73.15031.99894.50231.00634.96164.96671.6679
H83.10591.99894.39471.00654.96674.98101.6679

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 173.859 C1 N3 H5 114.293
C1 N3 H6 114.275 C2 C1 N3 173.859
C2 N4 H7 114.293 C2 N4 H8 114.275
H5 N3 H6 111.917 H7 N4 H8 111.917
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability