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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: HF/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/cc-pVDZ
 hartrees
Energy at 0K-131.862476
Energy at 298.15K-131.864982
HF Energy-131.862476
Nuclear repulsion energy59.691897
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 HF/cc-pVDZ
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' 3749 3404 25.07      
2 A' 3649 3314 96.26      
3 A' 2415 2193 93.51      
4 A' 1766 1603 27.57      
5 A' 1129 1025 14.34      
6 A' 791 718 220.94      
7 A' 649 589 78.44      
8 A' 500 454 34.85      
9 A" 3841 3488 40.53      
10 A" 1322 1200 0.30      
11 A" 826 750 36.63      
12 A" 421 383 6.90      

Unscaled Zero Point Vibrational Energy (zpe) 10529.1 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 9560.4 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 HF/cc-pVDZ
ABC
10.13559 0.31398 0.30786

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.138 1.350 0.000
C2 0.000 0.165 0.000
N3 0.201 -1.179 0.000
H4 -0.252 2.406 0.000
H5 -0.164 -1.622 0.823
H6 -0.164 -1.622 -0.823

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.19332.55171.06183.08443.0844
C21.19331.35872.25511.97431.9743
N32.55171.35873.61331.00351.0035
H41.06182.25513.61334.11234.1123
H53.08441.97431.00354.11231.6459
H63.08441.97431.00354.11231.6459

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 178.124 C2 C1 H4 179.559
C2 N3 H5 112.532 C2 N3 H6 112.532
H5 N3 H6 110.188
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.054      
2 C 0.038      
3 N -0.285      
4 H 0.045      
5 H 0.128      
6 H 0.128      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.168 -1.341 0.000 1.778
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.385 1.485 0.000
y 1.485 -11.937 0.000
z 0.000 0.000 -17.150
Traceless
 xyz
x -5.841 1.485 0.000
y 1.485 6.831 0.000
z 0.000 0.000 -0.990
Polar
3z2-r2-1.980
x2-y2-8.448
xy1.485
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.994 -0.320 0.000
y -0.320 6.038 0.000
z 0.000 0.000 2.305


<r2> (average value of r2) Å2
<r2> 44.050
(<r2>)1/2 6.637