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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: TPSSh/STO-3G

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/STO-3G
 hartrees
Energy at 0K-131.012028
Energy at 298.15K-131.014088
HF Energy-131.012028
Nuclear repulsion energy57.970613
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/STO-3G
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' 3694 3694 160.05      
2 A' 3485 3485 1.98      
3 A' 2429 2429 6.00      
4 A' 1799 1799 7.82      
5 A' 1086 1086 14.79      
6 A' 788 788 133.92      
7 A' 589 589 34.85      
8 A' 390 390 9.58      
9 A" 3661 3661 0.14      
10 A" 1333 1333 0.90      
11 A" 742 742 14.44      
12 A" 356 356 1.83      

Unscaled Zero Point Vibrational Energy (zpe) 10175.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10175.7 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 TPSSh/STO-3G
ABC
8.69877 0.29770 0.29296

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.087 1.383 0.000
C2 0.000 0.180 0.000
N3 0.047 -1.239 0.000
H4 0.143 2.460 0.000
H5 -0.499 -1.584 0.842
H6 -0.499 -1.584 -0.842

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20642.62261.07843.14003.1400
C21.20641.41992.28482.01762.0176
N32.62261.41993.70061.06141.0614
H41.07842.28483.70064.18104.1810
H53.14002.01761.06144.18101.6832
H63.14002.01761.06144.18101.6832

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 173.938 C2 C1 H4 178.813
C2 N3 H5 107.939 C2 N3 H6 107.939
H5 N3 H6 104.924
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.152      
2 C 0.004      
3 N -0.342      
4 H 0.107      
5 H 0.191      
6 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.634 -0.656 0.000 1.760
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 0.590 0.447 0.000
y 0.447 4.244 0.000
z 0.000 0.000 1.135


<r2> (average value of r2) Å2
<r2> 45.024
(<r2>)1/2 6.710