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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3LYP/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 B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-132.695506
Energy at 298.15K-132.697653
HF Energy-132.695506
Nuclear repulsion energy59.503576
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 B3LYP/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' 3530 3407 12.12      
2 A' 3521 3398 83.23      
3 A' 2268 2189 81.31      
4 A' 1639 1581 22.00      
5 A' 1085 1047 11.63      
6 A' 652 629 195.80      
7 A' 494 477 83.49      
8 A' 405 391 21.77      
9 A" 3609 3482 24.94      
10 A" 1199 1157 0.00      
11 A" 694 669 32.98      
12 A" 373 360 5.74      

Unscaled Zero Point Vibrational Energy (zpe) 9734.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9393.9 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 B3LYP/6-31G(2df,p)
ABC
10.21487 0.31252 0.30603

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.031 1.364 0.000
C2 0.000 0.161 0.000
N3 0.109 -1.187 0.000
H4 -0.071 2.423 0.000
H5 -0.254 -1.634 0.833
H6 -0.254 -1.634 -0.833

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20312.55441.06003.11923.1192
C21.20311.35232.26301.99501.9950
N32.55441.35233.61431.01241.0124
H41.06002.26303.61434.14574.1457
H53.11921.99501.01244.14571.6651
H63.11921.99501.01244.14571.6651

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.845 C2 C1 H4 179.337
C2 N3 H5 114.291 C2 N3 H6 114.291
H5 N3 H6 110.638
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.165      
2 C 0.070      
3 N -0.611      
4 H 0.176      
5 H 0.265      
6 H 0.265      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.079 -1.413 0.000 1.778
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.630 1.812 0.000
y 1.812 -12.002 0.000
z 0.000 0.000 -16.586
Traceless
 xyz
x -5.336 1.812 0.000
y 1.812 6.105 0.000
z 0.000 0.000 -0.769
Polar
3z2-r2-1.539
x2-y2-7.627
xy1.812
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.190 -0.004 0.000
y -0.004 6.398 0.000
z 0.000 0.000 2.570


<r2> (average value of r2) Å2
<r2> 44.034
(<r2>)1/2 6.636