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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-132.642262
Energy at 298.15K-132.644424
HF Energy-132.642262
Nuclear repulsion energy59.541057
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 B3PW91/6-31G(2df,p)
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' 3557 3419 9.41      
2 A' 3527 3390 92.04      
3 A' 2273 2185 87.06      
4 A' 1634 1571 24.60      
5 A' 1096 1054 12.33      
6 A' 642 617 193.85      
7 A' 498 479 95.51      
8 A' 417 401 18.66      
9 A" 3644 3503 31.11      
10 A" 1195 1149 0.00      
11 A" 698 671 34.56      
12 A" 377 362 6.32      

Unscaled Zero Point Vibrational Energy (zpe) 9778.1 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 9400.7 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 B3PW91/6-31G(2df,p)
ABC
10.22549 0.31299 0.30645

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.035 1.363 0.000
C2 0.000 0.159 0.000
N3 0.111 -1.185 0.000
H4 -0.076 2.424 0.000
H5 -0.248 -1.632 0.833
H6 -0.248 -1.632 -0.833

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20432.55271.06163.11593.1159
C21.20431.34932.26591.99081.9908
N32.55271.34933.61421.01121.0112
H41.06162.26593.61424.14394.1439
H53.11591.99081.01124.14391.6660
H63.11591.99081.01124.14391.6660

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.911 C2 C1 H4 179.437
C2 N3 H5 114.236 C2 N3 H6 114.236
H5 N3 H6 110.926
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.198      
2 C 0.098      
3 N -0.672      
4 H 0.201      
5 H 0.286      
6 H 0.286      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.078 -1.447 0.000 1.805
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.639 1.805 0.000
y 1.805 -11.732 0.000
z 0.000 0.000 -16.515
Traceless
 xyz
x -5.515 1.805 0.000
y 1.805 6.345 0.000
z 0.000 0.000 -0.830
Polar
3z2-r2-1.659
x2-y2-7.907
xy1.805
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.213 -0.028 0.000
y -0.028 6.407 0.000
z 0.000 0.000 2.569


<r2> (average value of r2) Å2
<r2> 43.918
(<r2>)1/2 6.627