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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-132.516369
Energy at 298.15K-132.518195
HF Energy-132.516369
Nuclear repulsion energy58.954867
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 PBEPBE/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' 3451 3403 9.18      
2 A' 3440 3393 76.08      
3 A' 2206 2176 80.37      
4 A' 1592 1571 23.48      
5 A' 1078 1063 10.40      
6 A' 623 615 225.80      
7 A' 467 461 60.79      
8 A' 246 243 38.07      
9 A" 3539 3491 19.53      
10 A" 1164 1148 0.13      
11 A" 608 600 33.73      
12 A" 332 328 3.56      

Unscaled Zero Point Vibrational Energy (zpe) 9373.4 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 9245.0 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 PBEPBE/6-31G**
ABC
9.99824 0.30697 0.30063

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.027 1.379 0.000
C2 0.000 0.157 0.000
N3 0.069 -1.199 0.000
H4 -0.011 2.449 0.000
H5 -0.316 -1.635 0.840
H6 -0.316 -1.635 -0.840

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22172.57801.07093.14703.1470
C21.22171.35802.29172.00412.0041
N32.57801.35803.64881.02131.0213
H41.07092.29173.64884.18044.1804
H53.14702.00411.02134.18041.6796
H63.14702.00411.02134.18041.6796

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.845 C2 C1 H4 176.768
C2 N3 H5 114.023 C2 N3 H6 114.023
H5 N3 H6 110.620
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.254      
2 C 0.275      
3 N -0.724      
4 H 0.142      
5 H 0.281      
6 H 0.281      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.295 -1.487 0.000 1.972
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.600 2.137 0.000
y 2.137 -11.924 0.000
z 0.000 0.000 -16.566
Traceless
 xyz
x -5.355 2.137 0.000
y 2.137 6.159 0.000
z 0.000 0.000 -0.804
Polar
3z2-r2-1.608
x2-y2-7.676
xy2.137
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.770 0.181 0.000
y 0.181 6.600 0.000
z 0.000 0.000 2.259


<r2> (average value of r2) Å2
<r2> 44.618
(<r2>)1/2 6.680