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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: TPSSh/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/3-21G
 hartrees
Energy at 0K-131.960683
Energy at 298.15K-131.962932
HF Energy-131.960683
Nuclear repulsion energy59.407428
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 TPSSh/3-21G
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' 3530 3420 13.40      
2 A' 3510 3400 89.21      
3 A' 2264 2193 99.13      
4 A' 1686 1634 46.13      
5 A' 1129 1094 16.89      
6 A' 677 656 103.65      
7 A' 553 536 33.92      
8 A' 300 290 393.74      
9 A" 3629 3515 38.89      
10 A" 1176 1140 7.60      
11 A" 873 846 30.24      
12 A" 475 460 20.61      

Unscaled Zero Point Vibrational Energy (zpe) 9901.1 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 9592.2 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 TPSSh/3-21G
ABC
11.08703 0.31172 0.30320

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 1.373 0.000
C2 0.000 0.159 0.000
N3 -0.000 -1.176 0.000
H4 0.001 2.434 0.000
H5 0.001 -1.701 0.869
H6 0.001 -1.701 -0.869

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21412.54921.06083.19463.1946
C21.21411.33512.27482.05302.0530
N32.54921.33513.61001.01491.0149
H41.06082.27483.61004.22534.2253
H53.19462.05301.01494.22531.7371
H63.19462.05301.01494.22531.7371

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.982 C2 C1 H4 179.908
C2 N3 H5 121.155 C2 N3 H6 121.155
H5 N3 H6 117.689
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.040      
2 C 0.130      
3 N -0.996      
4 H 0.258      
5 H 0.324      
6 H 0.324      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.006 -2.071 0.000 2.071
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.020 -0.001 0.000
y -0.001 6.091 0.000
z 0.000 0.000 1.743


<r2> (average value of r2) Å2
<r2> 44.261
(<r2>)1/2 6.653