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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-132.658288
Energy at 298.15K-132.660485
HF Energy-132.658288
Nuclear repulsion energy59.628049
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 mPW1PW91/6-31G(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' 3582 3419 12.39      
2 A' 3543 3382 93.19      
3 A' 2289 2185 88.08      
4 A' 1643 1569 25.42      
5 A' 1103 1053 12.73      
6 A' 648 619 193.75      
7 A' 505 482 101.07      
8 A' 433 414 14.55      
9 A" 3671 3505 33.48      
10 A" 1203 1149 0.00      
11 A" 708 676 34.34      
12 A" 382 364 6.48      

Unscaled Zero Point Vibrational Energy (zpe) 9855.0 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 9408.6 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 mPW1PW91/6-31G(2df,p)
ABC
10.24994 0.31388 0.30733

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 1.361 0.000
C2 0.000 0.159 0.000
N3 0.116 -1.183 0.000
H4 -0.087 2.420 0.000
H5 -0.242 -1.629 0.832
H6 -0.242 -1.629 -0.832

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20222.54921.06043.11023.1102
C21.20221.34792.26251.98741.9874
N32.54921.34793.60951.00941.0094
H41.06042.26253.60954.13704.1370
H53.11021.98741.00944.13701.6635
H63.11021.98741.00944.13701.6635

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.991 C2 C1 H4 179.462
C2 N3 H5 114.165 C2 N3 H6 114.165
H5 N3 H6 110.984
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.202      
2 C 0.103      
3 N -0.677      
4 H 0.201      
5 H 0.287      
6 H 0.287      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.078 -1.434 0.000 1.794
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.659 1.775 0.000
y 1.775 -11.696 0.000
z 0.000 0.000 -16.516
Traceless
 xyz
x -5.553 1.775 0.000
y 1.775 6.391 0.000
z 0.000 0.000 -0.839
Polar
3z2-r2-1.677
x2-y2-7.963
xy1.775
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.211 -0.048 0.000
y -0.048 6.351 0.000
z 0.000 0.000 2.559


<r2> (average value of r2) Å2
<r2> 43.815
(<r2>)1/2 6.619