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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: PBEPBEultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-132.536490
Energy at 298.15K-132.538321
HF Energy-132.536490
Nuclear repulsion energy58.877741
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 PBEPBEultrafine/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' 3438 3417 3.17      
2 A' 3427 3406 95.84      
3 A' 2188 2174 126.75      
4 A' 1564 1554 21.98      
5 A' 1070 1063 14.08      
6 A' 574 570 173.15      
7 A' 457 454 81.28      
8 A' 291 289 30.81      
9 A" 3525 3504 31.54      
10 A" 1146 1139 0.44      
11 A" 597 593 43.29      
12 A" 312 310 6.23      

Unscaled Zero Point Vibrational Energy (zpe) 9293.2 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 9236.5 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
10.05142 0.30622 0.29975

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.078 1.379 0.000
C2 0.000 0.156 0.000
N3 0.023 -1.200 0.000
H4 0.094 2.454 0.000
H5 -0.361 -1.632 0.843
H6 -0.361 -1.632 -0.843

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22522.57981.07503.15773.1577
C21.22521.35672.29942.01002.0100
N32.57981.35673.65471.02221.0222
H41.07502.29943.65474.19694.1969
H53.15772.01001.02224.19691.6862
H63.15772.01001.02224.19691.6862

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.380 C2 C1 H4 177.176
C2 N3 H5 114.596 C2 N3 H6 114.596
H5 N3 H6 111.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.785      
2 C -0.221      
3 N -0.056      
4 H -0.490      
5 H -0.008      
6 H -0.008      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.119 -1.494 0.000 1.866
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.652 2.273 0.000
y 2.273 -12.946 0.000
z 0.000 0.000 -17.469
Traceless
 xyz
x -5.445 2.273 0.000
y 2.273 6.115 0.000
z 0.000 0.000 -0.671
Polar
3z2-r2-1.341
x2-y2-7.707
xy2.273
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.029 0.260 0.000
y 0.260 7.962 0.000
z 0.000 0.000 3.931


<r2> (average value of r2) Å2
<r2> 45.353
(<r2>)1/2 6.734