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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/cc-pVDZ
 hartrees
Energy at 0K-116.659752
Energy at 298.15K 
HF Energy-116.659752
Nuclear repulsion energy58.427393
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 B3LYPultrafine/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 3481 3377 63.11 33.49 0.26 0.42
2 A1 3028 2937 19.25 208.37 0.01 0.02
3 A1 2238 2171 5.09 106.46 0.30 0.47
4 A1 1394 1352 0.74 18.49 0.48 0.65
5 A1 953 924 0.34 3.29 0.16 0.28
6 E 3098 3005 8.07 95.82 0.75 0.86
6 E 3098 3005 8.07 95.82 0.75 0.86
7 E 1448 1404 7.43 15.54 0.75 0.86
7 E 1448 1404 7.43 15.54 0.75 0.86
8 E 1042 1011 1.26 0.11 0.75 0.86
8 E 1042 1011 1.26 0.11 0.75 0.86
9 E 653 634 39.04 0.52 0.75 0.86
9 E 653 634 39.04 0.52 0.75 0.86
10 E 345 334 6.29 8.69 0.75 0.86
10 E 345 334 6.29 8.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12132.0 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 11768.0 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 B3LYPultrafine/cc-pVDZ
ABC
5.27302 0.28326 0.28326

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.243
C2 0.000 0.000 0.217
C3 0.000 0.000 1.429
H4 0.000 0.000 2.501
H5 0.000 1.028 -1.640
H6 0.891 -0.514 -1.640
H7 -0.891 -0.514 -1.640

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.46032.67243.74421.10221.10221.1022
C21.46031.21212.28402.12272.12272.1227
C32.67241.21211.07193.23683.23683.2368
H43.74422.28401.07194.26674.26674.2667
H51.10222.12273.23684.26671.78101.7810
H61.10222.12273.23684.26671.78101.7810
H71.10222.12273.23684.26671.78101.7810

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 111.096
C2 C1 H6 111.096 C2 C1 H7 111.096
C2 C3 H4 180.000 H5 C1 H6 107.798
H5 C1 H7 107.798 H6 C1 H7 107.798
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.049      
2 C 0.195      
3 C -0.392      
4 H -0.028      
5 H 0.059      
6 H 0.059      
7 H 0.059      


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 -0.773 0.773
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.333 0.000 0.000
y 0.000 -19.333 0.000
z 0.000 0.000 -13.962
Traceless
 xyz
x -2.686 0.000 0.000
y 0.000 -2.686 0.000
z 0.000 0.000 5.372
Polar
3z2-r210.743
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 2.911 0.000 0.000
y 0.000 2.911 0.000
z 0.000 0.000 7.071


<r2> (average value of r2) Å2
<r2> 50.263
(<r2>)1/2 7.090