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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B2PLYP=FULL/6-31G**

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=FULL/6-31G**
 hartrees
Energy at 0K-187.851594
Energy at 298.15K-187.855551
HF Energy-187.649950
Nuclear repulsion energy101.674274
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=FULL/6-31G**
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 3667 3667 14.59      
2 A 3571 3571 2.55      
3 A 2385 2385 0.16      
4 A 1678 1678 11.06      
5 A 1214 1214 0.09      
6 A 829 829 4.15      
7 A 603 603 144.64      
8 A 394 394 0.63      
9 A 384 384 30.75      
10 A 192 192 16.68      
11 B 3667 3667 13.97      
12 B 3574 3574 5.73      
13 B 1678 1678 24.20      
14 B 1383 1383 89.18      
15 B 1214 1214 0.11      
16 B 657 657 374.70      
17 B 386 386 17.89      
18 B 191 191 17.60      

Unscaled Zero Point Vibrational Energy (zpe) 13833.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13833.2 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 B2PLYP=FULL/6-31G**
ABC
5.15678 0.11874 0.11871

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.608 0.035
C2 -0.006 -0.608 0.035
N3 -0.006 1.964 -0.074
N4 0.006 -1.964 -0.074
H5 -0.334 2.455 0.744
H6 0.846 2.369 -0.436
H7 0.334 -2.455 0.744
H8 -0.846 -2.369 -0.436

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21591.36012.57392.00772.00773.16143.1323
C21.21592.57391.36013.16143.13232.00772.0077
N31.36012.57393.92721.00991.01014.50704.4285
N42.57391.36013.92724.50704.42851.00991.0101
H52.00773.16141.00994.50701.67104.95614.9934
H62.00773.13231.01014.42851.67104.99345.0316
H73.16142.00774.50701.00994.95614.99341.6710
H83.13232.00774.42851.01014.99345.03161.6710

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.264 C1 N3 H5 115.000
C1 N3 H6 114.987 C2 C1 N3 175.264
C2 N4 H7 115.000 C2 N4 H8 114.987
H5 N3 H6 111.621 H7 N4 H8 111.621
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability