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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B3LYP/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at B3LYP/daug-cc-pVDZ
 hartrees
Energy at 0K-116.668115
Energy at 298.15K 
HF Energy-116.668115
Nuclear repulsion energy58.464252
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/daug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3483 3483 66.25 26.42 0.30 0.46
2 A1 3030 3030 19.29 251.52 0.02 0.04
3 A1 2223 2223 9.45 185.65 0.12 0.22
4 A1 1390 1390 0.08 12.63 0.43 0.60
5 A1 945 945 0.45 5.76 0.02 0.04
6 E 3099 3099 7.03 80.10 0.75 0.86
6 E 3099 3099 7.03 80.03 0.75 0.86
7 E 1452 1452 8.56 6.53 0.75 0.86
7 E 1452 1452 8.56 6.55 0.75 0.86
8 E 1035 1035 0.09 0.17 0.75 0.86
8 E 1035 1035 0.08 0.17 0.75 0.86
9 E 598 598 52.28 2.47 0.75 0.86
9 E 598 598 52.28 2.48 0.75 0.86
10 E 315 315 6.39 3.56 0.75 0.86
10 E 315 315 6.39 3.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12033.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12033.7 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/daug-cc-pVDZ
ABC
5.28280 0.28337 0.28337

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/daug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.245
C2 0.000 0.000 0.217
C3 0.000 0.000 1.429
H4 0.000 0.000 2.497
H5 0.000 1.027 -1.635
H6 0.890 -0.514 -1.635
H7 -0.890 -0.514 -1.635

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.46192.67413.74231.09871.09871.0987
C21.46191.21232.28042.11732.11732.1173
C32.67411.21231.06823.23133.23133.2313
H43.74232.28041.06824.25764.25764.2576
H51.09872.11733.23134.25761.77941.7794
H61.09872.11733.23134.25761.77941.7794
H71.09872.11733.23134.25761.77941.7794

picture of propyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 180.000 C2 C1 H5 110.766
C2 C1 H6 110.766 C2 C1 H7 110.766
C2 C3 H4 180.000 H5 C1 H6 108.146
H5 C1 H7 108.146 H6 C1 H7 108.146
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.403      
2 C -1.300      
3 C 2.268      
4 H -0.914      
5 H -0.153      
6 H -0.153      
7 H -0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.849 0.849
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.907 0.000 0.000
y 0.000 -19.907 0.000
z 0.000 0.000 -14.402
Traceless
 xyz
x -2.753 0.000 0.000
y 0.000 -2.753 0.000
z 0.000 0.000 5.505
Polar
3z2-r211.011
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.475 0.000 0.000
y 0.000 4.475 0.000
z 0.000 0.000 7.849


<r2> (average value of r2) Å2
<r2> 50.542
(<r2>)1/2 7.109