return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: wB97X-D/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-132.690038
Energy at 298.15K-132.692223
HF Energy-132.690038
Nuclear repulsion energy 
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 wB97X-D/aug-cc-pVTZ
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' 3584 3429 19.87      
2 A' 3489 3337 95.24      
3 A' 2269 2170 137.82      
4 A' 1647 1575 29.62      
5 A' 1093 1046 19.55      
6 A' 605 579 171.07      
7 A' 507 485 117.48      
8 A' 452 432 19.85      
9 A" 3674 3515 43.01      
10 A" 1204 1151 0.38      
11 A" 695 665 39.24      
12 A" 373 356 11.02      

Unscaled Zero Point Vibrational Energy (zpe) 9794.8 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 9369.7 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 wB97X-D/aug-cc-pVTZ
ABC
10.35218 0.31437 0.30755

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.039 1.359 0.000
C2 0.000 0.162 0.000
N3 0.110 -1.183 0.000
H4 -0.084 2.419 0.000
H5 -0.225 -1.633 0.836
H6 -0.225 -1.633 -0.836

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.19802.54641.06053.11293.1129
C21.19801.34912.25851.99321.9932
N32.54641.34913.60681.00711.0071
H41.06052.25853.60684.14014.1401
H53.11291.99321.00714.14011.6718
H63.11291.99321.00714.14011.6718

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.195 C2 C1 H4 179.437
C2 N3 H5 114.764 C2 N3 H6 114.764
H5 N3 H6 112.196
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.531      
2 C 1.200      
3 N -0.371      
4 H 0.421      
5 H 0.140      
6 H 0.140      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.989 -1.452 0.000 1.757
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.598 1.729 0.000
y 1.729 -12.287 0.000
z 0.000 0.000 -17.154
Traceless
 xyz
x -5.877 1.729 0.000
y 1.729 6.589 0.000
z 0.000 0.000 -0.712
Polar
3z2-r2-1.423
x2-y2-8.311
xy1.729
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.921 -0.099 0.000
y -0.099 7.285 0.000
z 0.000 0.000 3.885


<r2> (average value of r2) Å2
<r2> 44.241
(<r2>)1/2 6.651