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: HSEh1PBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/TZVP
 hartrees
Energy at 0K-132.583935
Energy at 298.15K-132.586060
HF Energy-132.583935
Nuclear repulsion energy59.687348
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 HSEh1PBE/TZVP
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 3439 23.14      
2 A' 3504 3364 103.05      
3 A' 2270 2179 130.35      
4 A' 1646 1581 37.91      
5 A' 1109 1065 19.15      
6 A' 558 536 161.24      
7 A' 493 473 195.92      
8 A' 430 413 12.45      
9 A" 3673 3527 44.13      
10 A" 1194 1147 0.23      
11 A" 706 678 44.44      
12 A" 370 355 10.78      

Unscaled Zero Point Vibrational Energy (zpe) 9767.0 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 9377.3 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 HSEh1PBE/TZVP
ABC
10.47083 0.31462 0.30754

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.024 1.361 0.000
C2 0.000 0.159 0.000
N3 0.092 -1.180 0.000
H4 -0.055 2.423 0.000
H5 -0.221 -1.642 0.840
H6 -0.221 -1.642 -0.840

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20262.54371.06213.12423.1242
C21.20261.34192.26461.99891.9989
N32.54371.34193.60571.00831.0083
H41.06212.26463.60574.15354.1535
H53.12421.99891.00834.15351.6798
H63.12421.99891.00834.15351.6798

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.228 C2 C1 H4 179.496
C2 N3 H5 115.816 C2 N3 H6 115.816
H5 N3 H6 112.820
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.515      
2 C 0.182      
3 N -0.323      
4 H 0.154      
5 H 0.251      
6 H 0.251      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.039 -1.599 0.000 1.907
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.679 1.793 0.000
y 1.793 -12.041 0.000
z 0.000 0.000 -17.048
Traceless
 xyz
x -6.135 1.793 0.000
y 1.793 6.823 0.000
z 0.000 0.000 -0.688
Polar
3z2-r2-1.376
x2-y2-8.639
xy1.793
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.587 -0.055 0.000
y -0.055 6.933 0.000
z 0.000 0.000 2.713


<r2> (average value of r2) Å2
<r2> 44.208
(<r2>)1/2 6.649