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: B3LYPultrafine/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYPultrafine/Def2TZVPP
 hartrees
Energy at 0K-132.747026
Energy at 298.15K-132.749167
HF Energy-132.747026
Nuclear repulsion energy59.600696
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 B3LYPultrafine/Def2TZVPP
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' 3538 3538 13.98      
2 A' 3485 3485 95.27      
3 A' 2242 2242 123.90      
4 A' 1640 1640 27.41      
5 A' 1086 1086 17.05      
6 A' 596 596 185.69      
7 A' 494 494 129.73      
8 A' 431 431 10.21      
9 A" 3620 3620 36.97      
10 A" 1197 1197 0.01      
11 A" 704 704 42.38      
12 A" 368 368 9.66      

Unscaled Zero Point Vibrational Energy (zpe) 9700.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9700.9 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 B3LYPultrafine/Def2TZVPP
ABC
10.39270 0.31349 0.30665

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.018 1.363 0.000
C2 0.000 0.161 0.000
N3 0.091 -1.184 0.000
H4 -0.042 2.422 0.000
H5 -0.244 -1.639 0.837
H6 -0.244 -1.639 -0.837

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20172.54921.06003.12403.1240
C21.20171.34842.26171.99971.9997
N32.54921.34843.60911.00921.0092
H41.06002.26173.60914.15134.1513
H53.12401.99971.00924.15131.6731
H63.12401.99971.00924.15131.6731

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.980 C2 C1 H4 179.514
C2 N3 H5 115.278 C2 N3 H6 115.278
H5 N3 H6 111.980
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.226      
2 C -0.087      
3 N -0.298      
4 H 0.265      
5 H 0.173      
6 H 0.173      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.993 -1.547 0.000 1.838
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.598 1.814 0.000
y 1.814 -12.464 0.000
z 0.000 0.000 -17.252
Traceless
 xyz
x -5.740 1.814 0.000
y 1.814 6.461 0.000
z 0.000 0.000 -0.721
Polar
3z2-r2-1.443
x2-y2-8.134
xy1.814
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.081 -0.014 0.000
y -0.014 7.118 0.000
z 0.000 0.000 3.211


<r2> (average value of r2) Å2
<r2> 44.407
(<r2>)1/2 6.664