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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B2PLYP=FULLultrafine/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=FULLultrafine/6-31G**
 hartrees
Energy at 0K-187.851593
Energy at 298.15K 
HF Energy-187.649948
Nuclear repulsion energy101.674181
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**
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 3668 3668 14.60      
2 A 3571 3571 2.54      
3 A 2385 2385 0.16      
4 A 1678 1678 11.06      
5 A 1214 1214 0.09      
6 A 829 829 4.16      
7 A 603 603 144.57      
8 A 393 393 0.25      
9 A 383 383 31.11      
10 A 192 192 16.71      
11 B 3667 3667 13.96      
12 B 3574 3574 5.73      
13 B 1678 1678 24.20      
14 B 1383 1383 89.17      
15 B 1214 1214 0.11      
16 B 658 658 374.70      
17 B 386 386 17.90      
18 B 191 191 17.61      

Unscaled Zero Point Vibrational Energy (zpe) 13832.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13832.2 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=FULLultrafine/6-31G**
ABC
5.15664 0.11874 0.11871

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/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 0.745
H6 0.846 2.369 -0.436
H7 0.334 -2.455 0.745
H8 -0.846 -2.369 -0.436

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21591.36012.57392.00772.00773.16143.1324
C21.21592.57391.36013.16143.13242.00772.0077
N31.36012.57393.92721.00991.01014.50704.4285
N42.57391.36013.92724.50704.42851.00991.0101
H52.00773.16141.00994.50701.67104.95584.9934
H62.00773.13241.01014.42851.67104.99345.0318
H73.16142.00774.50701.00994.95584.99341.6710
H83.13242.00774.42851.01014.99345.03181.6710

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.273 C1 N3 H5 114.999
C1 N3 H6 114.986 C2 C1 N3 175.273
C2 N4 H7 114.999 C2 N4 H8 114.986
H5 N3 H6 111.621 H7 N4 H8 111.621
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability