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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B2PLYP=FULL/6-31G**

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/6-31G**
 hartrees
Energy at 0K-116.528209
Energy at 298.15K 
HF Energy-116.388807
Nuclear repulsion energy58.589470
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/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 A1 3521 3521 53.58 36.56 0.21 0.35
2 A1 3084 3084 18.03 166.59 0.01 0.01
3 A1 2218 2218 1.34 72.77 0.30 0.46
4 A1 1448 1448 0.65 19.61 0.54 0.70
5 A1 954 954 1.09 3.62 0.21 0.35
6 E 3160 3160 10.60 81.80 0.75 0.86
6 E 3160 3160 10.60 81.80 0.75 0.86
7 E 1518 1518 5.93 19.28 0.75 0.86
7 E 1518 1518 5.93 19.28 0.75 0.86
8 E 1075 1075 1.07 0.03 0.75 0.86
8 E 1075 1075 1.07 0.03 0.75 0.86
9 E 595 595 49.34 0.12 0.75 0.86
9 E 595 595 49.34 0.12 0.75 0.86
10 E 327 327 2.26 9.48 0.75 0.86
10 E 327 327 2.26 9.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12286.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12286.8 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/6-31G**
ABC
5.36791 0.28396 0.28396

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.244
C2 0.000 0.000 0.217
C3 0.000 0.000 1.429
H4 0.000 0.000 2.491
H5 0.000 1.019 -1.634
H6 0.883 -0.510 -1.634
H7 -0.883 -0.510 -1.634

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.46052.67213.73481.09141.09141.0914
C21.46051.21162.27432.11302.11302.1130
C32.67211.21161.06273.22773.22773.2277
H43.73482.27431.06274.24934.24934.2493
H51.09142.11303.22774.24931.76521.7652
H61.09142.11303.22774.24931.76521.7652
H71.09142.11303.22774.24931.76521.7652

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 110.962
C2 C1 H6 110.962 C2 C1 H7 110.962
C2 C3 H4 180.000 H5 C1 H6 107.940
H5 C1 H7 107.940 H6 C1 H7 107.940
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability