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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B2PLYP=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at B2PLYP=FULL/cc-pVTZ
 hartrees
Energy at 0K-116.602805
Energy at 298.15K 
HF Energy-116.429919
Nuclear repulsion energy58.866893
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=FULL/cc-pVTZ
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 3496 3341 58.68 29.53 0.33 0.50
2 A1 3062 2927 15.55 208.73 0.01 0.02
3 A1 2199 2102 4.97 100.88 0.25 0.40
4 A1 1428 1365 0.06 10.28 0.45 0.62
5 A1 946 904 0.51 3.90 0.10 0.18
6 E 3125 2987 7.04 75.28 0.75 0.86
6 E 3125 2987 7.04 75.28 0.75 0.86
7 E 1497 1431 7.76 8.45 0.75 0.86
7 E 1497 1431 7.76 8.45 0.75 0.86
8 E 1067 1020 0.36 0.12 0.75 0.86
8 E 1067 1020 0.36 0.12 0.75 0.86
9 E 660 631 46.21 2.25 0.75 0.86
9 E 660 631 46.21 2.25 0.75 0.86
10 E 340 325 8.12 6.78 0.75 0.86
10 E 340 325 8.12 6.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12254.7 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 11713.0 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 B2PLYP=FULL/cc-pVTZ
ABC
5.38984 0.28679 0.28679

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.238
C2 0.000 0.000 0.217
C3 0.000 0.000 1.421
H4 0.000 0.000 2.479
H5 0.000 1.017 -1.625
H6 0.881 -0.509 -1.625
H7 -0.881 -0.509 -1.625

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45552.65893.71711.08811.08811.0881
C21.45551.20342.26162.10422.10422.1042
C32.65891.20341.05833.21083.21083.2108
H43.71712.26161.05834.22784.22784.2278
H51.08812.10423.21084.22781.76161.7616
H61.08812.10423.21084.22781.76161.7616
H71.08812.10423.21084.22781.76161.7616

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 110.808
C2 C1 H6 110.808 C2 C1 H7 110.808
C2 C3 H4 180.000 H5 C1 H6 108.101
H5 C1 H7 108.101 H6 C1 H7 108.102
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability