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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-132.571861
Energy at 298.15K-132.573858
HF Energy-132.571861
Nuclear repulsion energy59.239432
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 PBEPBEultrafine/aug-cc-pVTZ
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' 3446 3408 5.21      
2 A' 3412 3373 94.03      
3 A' 2182 2158 129.74      
4 A' 1585 1567 23.43      
5 A' 1070 1058 15.22      
6 A' 584 578 168.07      
7 A' 468 463 97.32      
8 A' 361 357 21.93      
9 A" 3526 3486 34.58      
10 A" 1158 1145 0.27      
11 A" 651 644 40.15      
12 A" 346 342 8.65      

Unscaled Zero Point Vibrational Energy (zpe) 9393.7 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 9288.5 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
10.18625 0.31005 0.30337

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.015 1.371 0.000
C2 0.000 0.158 0.000
N3 0.068 -1.191 0.000
H4 0.017 2.439 0.000
H5 -0.290 -1.639 0.841
H6 -0.290 -1.639 -0.841

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21302.56331.06803.14083.1408
C21.21301.35152.28102.00582.0058
N32.56331.35153.63111.01791.0179
H41.06802.28103.63114.17584.1758
H53.14082.00581.01794.17581.6822
H63.14082.00581.01794.17581.6822

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.426 C2 C1 H4 179.406
C2 N3 H5 114.952 C2 N3 H6 114.952
H5 N3 H6 111.441
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.318      
2 C 0.889      
3 N -0.306      
4 H 0.469      
5 H 0.134      
6 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.996 -1.549 0.000 1.842
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.704 2.007 0.000
y 2.007 -12.776 0.000
z 0.000 0.000 -17.399
Traceless
 xyz
x -5.617 2.007 0.000
y 2.007 6.276 0.000
z 0.000 0.000 -0.659
Polar
3z2-r2-1.319
x2-y2-7.929
xy2.007
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.090 0.060 0.000
y 0.060 7.875 0.000
z 0.000 0.000 4.028


<r2> (average value of r2) Å2
<r2> 44.905
(<r2>)1/2 6.701