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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-132.532100
Energy at 298.15K-132.534059
HF Energy-132.394459
Nuclear repulsion energy59.144512
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 B2PLYP/6-31G*
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' 3544 3364 6.53      
2 A' 3531 3351 78.72      
3 A' 2245 2131 70.24      
4 A' 1692 1606 29.00      
5 A' 1083 1028 9.59      
6 A' 703 668 255.43      
7 A' 482 457 63.77      
8 A' 301 286 30.83      
9 A" 3636 3451 22.56      
10 A" 1234 1171 0.04      
11 A" 625 593 35.42      
12 A" 333 316 2.33      

Unscaled Zero Point Vibrational Energy (zpe) 9704.5 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 9211.5 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 B2PLYP/6-31G*
ABC
10.08117 0.30835 0.30215

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.008 1.374 0.000
C2 0.000 0.161 0.000
N3 0.086 -1.199 0.000
H4 -0.045 2.436 0.000
H5 -0.301 -1.629 0.833
H6 -0.301 -1.629 -0.833

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21302.57371.06323.13113.1311
C21.21301.36232.27521.99661.9966
N32.57371.36233.63671.01381.0138
H41.06322.27523.63674.15664.1566
H53.13111.99661.01384.15661.6652
H63.13111.99661.01384.15661.6652

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.021 C2 C1 H4 176.768
C2 N3 H5 113.531 C2 N3 H6 113.531
H5 N3 H6 110.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.314      
2 C 0.250      
3 N -0.839      
4 H 0.201      
5 H 0.351      
6 H 0.351      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.391 -1.249 0.000 1.870
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.743 2.214 0.000
y 2.214 -12.135 0.000
z 0.000 0.000 -16.635
Traceless
 xyz
x -5.358 2.214 0.000
y 2.214 6.054 0.000
z 0.000 0.000 -0.696
Polar
3z2-r2-1.393
x2-y2-7.608
xy2.214
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.693 0.109 0.000
y 0.109 6.164 0.000
z 0.000 0.000 2.162


<r2> (average value of r2) Å2
<r2> 44.498
(<r2>)1/2 6.671