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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: TPSSh/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 TPSSh/6-311G*
 hartrees
Energy at 0K-188.082260
Energy at 298.15K-188.086281
HF Energy-188.082260
Nuclear repulsion energy101.932517
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 TPSSh/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 3579 3447 6.03      
2 A 3501 3373 1.44      
3 A 2353 2266 0.46      
4 A 1706 1643 11.69      
5 A 1221 1176 0.12      
6 A 825 795 3.73      
7 A 567 546 158.02      
8 A 434 418 16.56      
9 A 414 399 9.82      
10 A 190 183 23.77      
11 B 3579 3447 5.55      
12 B 3505 3376 5.13      
13 B 1706 1644 22.46      
14 B 1376 1326 100.21      
15 B 1221 1176 0.19      
16 B 632 609 372.47      
17 B 415 400 14.88      
18 B 191 184 26.61      

Unscaled Zero Point Vibrational Energy (zpe) 13707.8 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 13203.3 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 TPSSh/6-311G*
ABC
5.19260 0.11950 0.11949

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 0.605 0.065
C2 -0.002 -0.605 0.065
N3 -0.002 1.953 -0.090
N4 0.002 -1.953 -0.090
H5 -0.337 2.479 0.707
H6 0.852 2.347 -0.466
H7 0.337 -2.479 0.707
H8 -0.852 -2.347 -0.466

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21081.35632.56302.00922.00953.16823.1189
C21.21082.56301.35633.16823.11892.00922.0095
N31.35632.56303.90581.01211.01244.51544.3994
N42.56301.35633.90584.51544.39941.01211.0124
H52.00923.16821.01214.51541.67565.00324.9930
H62.00953.11891.01244.39941.67564.99304.9938
H73.16822.00924.51541.01215.00324.99301.6756
H83.11892.00954.39941.01244.99304.99381.6756

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 173.461 C1 N3 H5 115.297
C1 N3 H6 115.302 C2 C1 N3 173.461
C2 N4 H7 115.297 C2 N4 H8 115.302
H5 N3 H6 111.715 H7 N4 H8 111.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.247      
2 C 0.247      
3 N -0.903      
4 N -0.903      
5 H 0.327      
6 H 0.329      
7 H 0.327      
8 H 0.329      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.535 1.535
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.095 0.237 0.000
y 0.237 9.395 0.000
z 0.000 0.000 3.085


<r2> (average value of r2) Å2
<r2> 97.030
(<r2>)1/2 9.850