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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: mPW1PW91/STO-3G

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/STO-3G
 hartrees
Energy at 0K-130.956370
Energy at 298.15K-130.958517
HF Energy-130.956370
Nuclear repulsion energy58.364544
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/STO-3G
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' 3738 3285 173.21      
2 A' 3604 3168 3.78      
3 A' 2481 2181 7.59      
4 A' 1810 1591 9.86      
5 A' 1105 971 7.15      
6 A' 741 651 171.04      
7 A' 630 554 41.43      
8 A' 429 377 12.15      
9 A" 3782 3324 0.97      
10 A" 1336 1175 0.32      
11 A" 784 689 15.19      
12 A" 379 333 1.67      

Unscaled Zero Point Vibrational Energy (zpe) 10409.8 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 9149.2 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/STO-3G
ABC
9.00103 0.30162 0.29640

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 1.378 0.000
C2 0.000 0.178 0.000
N3 0.108 -1.224 0.000
H4 0.001 2.453 0.000
H5 -0.386 -1.613 0.842
H6 -0.386 -1.613 -0.842

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20092.60421.07493.13153.1315
C21.20091.40542.27582.01572.0157
N32.60421.40543.67851.05091.0509
H41.07492.27583.67854.17034.1703
H53.13152.01571.05094.17031.6839
H63.13152.01571.05094.17031.6839

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.485 C2 C1 H4 179.860
C2 N3 H5 109.448 C2 N3 H6 109.448
H5 N3 H6 106.479
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.161      
2 C 0.012      
3 N -0.370      
4 H 0.114      
5 H 0.202      
6 H 0.202      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.570 -0.780 0.000 1.753
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.513 2.549 0.000
y 2.549 -12.454 0.000
z 0.000 0.000 -15.507
Traceless
 xyz
x -3.532 2.549 0.000
y 2.549 4.056 0.000
z 0.000 0.000 -0.524
Polar
3z2-r2-1.047
x2-y2-5.059
xy2.549
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.506 0.195 0.000
y 0.195 4.165 0.000
z 0.000 0.000 1.090


<r2> (average value of r2) Å2
<r2> 44.556
(<r2>)1/2 6.675