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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-132.658479
Energy at 298.15K-132.660579
HF Energy-132.658479
Nuclear repulsion energy59.432549
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 mPW1PW91/6-31+G**
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' 3602 3429 24.56      
2 A' 3521 3352 99.41      
3 A' 2269 2160 141.60      
4 A' 1650 1571 37.22      
5 A' 1112 1058 20.31      
6 A' 573 545 175.57      
7 A' 486 463 187.55      
8 A' 408 389 27.56      
9 A" 3705 3526 51.83      
10 A" 1195 1137 0.23      
11 A" 691 658 54.89      
12 A" 376 358 9.38      

Unscaled Zero Point Vibrational Energy (zpe) 9794.1 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 9322.0 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 mPW1PW91/6-31+G**
ABC
10.41296 0.31161 0.30470

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.046 1.368 0.000
C2 0.000 0.158 0.000
N3 0.111 -1.185 0.000
H4 -0.093 2.431 0.000
H5 -0.202 -1.648 0.840
H6 -0.202 -1.648 -0.840

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21032.55731.06393.13463.1346
C21.21031.34762.27422.00252.0025
N32.55731.34763.62111.00941.0094
H41.06392.27423.62114.16584.1658
H53.13462.00251.00944.16581.6806
H63.13462.00251.00944.16581.6806

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.481 C2 C1 H4 179.709
C2 N3 H5 115.592 C2 N3 H6 115.592
H5 N3 H6 112.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.254      
2 C -0.404      
3 N -0.729      
4 H 0.230      
5 H 0.325      
6 H 0.325      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.056 -1.575 0.000 1.896
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.968 1.755 0.000
y 1.755 -12.010 0.000
z 0.000 0.000 -17.142
Traceless
 xyz
x -6.392 1.755 0.000
y 1.755 7.045 0.000
z 0.000 0.000 -0.653
Polar
3z2-r2-1.306
x2-y2-8.958
xy1.755
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.889 -0.162 0.000
y -0.162 7.137 0.000
z 0.000 0.000 2.822


<r2> (average value of r2) Å2
<r2> 44.576
(<r2>)1/2 6.677