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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3PW91/6-31+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 B3PW91/6-31+G**
 hartrees
Energy at 0K-132.642535
Energy at 298.15K-132.644594
HF Energy-132.642535
Nuclear repulsion energy59.339838
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 B3PW91/6-31+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' 3576 3433 21.22      
2 A' 3504 3364 97.60      
3 A' 2253 2163 140.24      
4 A' 1641 1575 35.98      
5 A' 1104 1060 19.88      
6 A' 570 548 180.55      
7 A' 481 462 169.68      
8 A' 386 371 36.59      
9 A" 3677 3530 48.30      
10 A" 1188 1140 0.25      
11 A" 679 652 54.86      
12 A" 371 356 8.74      

Unscaled Zero Point Vibrational Energy (zpe) 9714.1 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 9326.5 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 B3PW91/6-31+G**
ABC
10.37758 0.31067 0.30378

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.042 1.370 0.000
C2 0.000 0.158 0.000
N3 0.107 -1.187 0.000
H4 -0.085 2.435 0.000
H5 -0.208 -1.650 0.841
H6 -0.208 -1.650 -0.841

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21252.56111.06533.13983.1398
C21.21251.34932.27772.00572.0057
N32.56111.34933.62631.01131.0113
H41.06532.27773.62634.17244.1724
H53.13982.00571.01134.17241.6829
H63.13982.00571.01134.17241.6829

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.405 C2 C1 H4 179.656
C2 N3 H5 115.600 C2 N3 H6 115.600
H5 N3 H6 112.610
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.232      
2 C -0.371      
3 N -0.724      
4 H 0.221      
5 H 0.321      
6 H 0.321      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.060 -1.583 0.000 1.905
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.926 1.783 0.000
y 1.783 -12.032 0.000
z 0.000 0.000 -17.120
Traceless
 xyz
x -6.349 1.783 0.000
y 1.783 6.990 0.000
z 0.000 0.000 -0.641
Polar
3z2-r2-1.282
x2-y2-8.893
xy1.783
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.897 -0.148 0.000
y -0.148 7.203 0.000
z 0.000 0.000 2.831


<r2> (average value of r2) Å2
<r2> 44.672
(<r2>)1/2 6.684