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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-132.545009
Energy at 298.15K-132.547195
HF Energy-132.545009
Nuclear repulsion energy59.608049
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/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' 3575 3423 12.00      
2 A' 3536 3386 93.33      
3 A' 2287 2190 87.90      
4 A' 1638 1568 25.13      
5 A' 1104 1058 12.77      
6 A' 646 619 192.64      
7 A' 502 481 99.00      
8 A' 428 410 17.01      
9 A" 3664 3509 33.11      
10 A" 1199 1149 0.00      
11 A" 704 674 34.20      
12 A" 382 366 6.37      

Unscaled Zero Point Vibrational Energy (zpe) 9831.5 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 9415.6 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 HSEh1PBE/6-31G(2df,p)
ABC
10.23819 0.31374 0.30719

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.040 1.361 0.000
C2 0.000 0.159 0.000
N3 0.116 -1.183 0.000
H4 -0.086 2.422 0.000
H5 -0.242 -1.630 0.832
H6 -0.242 -1.630 -0.832

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20302.54961.06153.11163.1116
C21.20301.34752.26451.98801.9880
N32.54961.34753.61101.01021.0102
H41.06152.26453.61104.13944.1394
H53.11161.98801.01024.13941.6647
H63.11161.98801.01024.13941.6647

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.975 C2 C1 H4 179.437
C2 N3 H5 114.198 C2 N3 H6 114.198
H5 N3 H6 110.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.207      
2 C 0.107      
3 N -0.670      
4 H 0.198      
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
  -1.077 -1.448 0.000 1.804
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.690 1.775 0.000
y 1.775 -11.732 0.000
z 0.000 0.000 -16.546
Traceless
 xyz
x -5.551 1.775 0.000
y 1.775 6.386 0.000
z 0.000 0.000 -0.835
Polar
3z2-r2-1.671
x2-y2-7.958
xy1.775
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.212 -0.043 0.000
y -0.043 6.375 0.000
z 0.000 0.000 2.565


<r2> (average value of r2) Å2
<r2> 43.856
(<r2>)1/2 6.622