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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-311G**
 hartrees
Energy at 0K-187.927224
Energy at 298.15K 
HF Energy-187.698895
Nuclear repulsion energy101.890935
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/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3642 3642 17.30      
2 A 3555 3555 2.48      
3 A 2367 2367 0.22      
4 A 1665 1665 11.48      
5 A 1214 1214 0.01      
6 A 821 821 4.24      
7 A 598 598 137.86      
8 A 414 414 2.73      
9 A 391 391 26.41      
10 A 200 200 20.93      
11 B 3642 3642 16.55      
12 B 3558 3558 6.71      
13 B 1665 1665 28.38      
14 B 1372 1372 101.35      
15 B 1214 1214 0.03      
16 B 654 654 342.95      
17 B 414 414 17.22      
18 B 200 200 22.85      

Unscaled Zero Point Vibrational Energy (zpe) 13792.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13792.9 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/6-311G**
ABC
5.16541 0.11931 0.11930

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 0.605 0.052
C2 -0.003 -0.605 0.052
N3 -0.003 1.956 -0.083
N4 0.003 -1.956 -0.083
H5 -0.335 2.464 0.724
H6 0.851 2.351 -0.451
H7 0.335 -2.464 0.724
H8 -0.851 -2.351 -0.451

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21001.35782.56462.00482.00493.15883.1173
C21.21002.56461.35783.15883.11732.00482.0049
N31.35782.56463.91201.00951.00974.50534.4048
N42.56461.35783.91204.50534.40481.00951.0097
H52.00483.15881.00954.50531.67294.97234.9824
H62.00493.11731.00974.40481.67294.98244.9998
H73.15882.00484.50531.00954.97234.98241.6729
H83.11732.00494.40481.00974.98244.99981.6729

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.265 C1 N3 H5 114.958
C1 N3 H6 114.950 C2 C1 N3 174.265
C2 N4 H7 114.958 C2 N4 H8 114.950
H5 N3 H6 111.880 H7 N4 H8 111.880
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability