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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: MP3=FULL/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-187.553121
Energy at 298.15K-187.557054
HF Energy-186.907331
Nuclear repulsion energy101.038627
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/aug-cc-pVDZ
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 3674 3674 26.19      
2 A 3581 3581 1.17      
3 A 2419 2419 0.07      
4 A 1662 1662 10.25      
5 A 1220 1220 0.82      
6 A 820 820 6.23      
7 A 628 628 99.32      
8 A 377 377 2.25      
9 A 339 339 30.15      
10 A 192 192 16.07      
11 B 3674 3674 25.21      
12 B 3582 3582 14.45      
13 B 1663 1663 29.75      
14 B 1348 1348 107.44      
15 B 1219 1219 0.79      
16 B 682 682 278.71      
17 B 375 375 16.12      
18 B 194 194 18.47      

Unscaled Zero Point Vibrational Energy (zpe) 13822.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13822.6 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/aug-cc-pVDZ
ABC
5.05186 0.11719 0.11716

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.611 0.039
C2 -0.005 -0.611 0.039
N3 -0.005 1.976 -0.077
N4 0.005 -1.976 -0.077
H5 -0.333 2.471 0.744
H6 0.849 2.380 -0.441
H7 0.333 -2.471 0.744
H8 -0.849 -2.380 -0.441

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.22181.37042.58982.01752.01783.17803.1473
C21.22182.58981.37043.17803.14732.01752.0178
N31.37042.58983.95281.01241.01254.53474.4523
N42.58981.37043.95284.53474.45231.01241.0125
H52.01753.17801.01244.53471.67614.98605.0198
H62.01783.14731.01254.45231.67615.01985.0538
H73.17802.01754.53471.01244.98605.01981.6761
H83.14732.01784.45231.01255.01985.05381.6761

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.077 C1 N3 H5 114.881
C1 N3 H6 114.899 C2 C1 N3 175.077
C2 N4 H7 114.881 C2 N4 H8 114.899
H5 N3 H6 111.740 H7 N4 H8 111.740
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability