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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/daug-cc-pVDZ
 hartrees
Energy at 0K-116.538333
Energy at 298.15K 
HF Energy-116.396757
Nuclear repulsion energy58.311420
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=FULLultrafine/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 3494 3494 60.66 32.91 0.26 0.41
2 A1 3056 3056 18.50 240.78 0.02 0.03
3 A1 2184 2184 6.20 152.14 0.12 0.22
4 A1 1401 1401 0.25 9.56 0.45 0.62
5 A1 946 946 0.70 6.91 0.03 0.06
6 E 3135 3135 6.78 73.79 0.75 0.86
6 E 3135 3135 6.78 73.75 0.75 0.86
7 E 1469 1469 8.23 6.15 0.75 0.86
7 E 1469 1469 8.24 6.14 0.75 0.86
8 E 1044 1044 0.03 0.15 0.75 0.86
8 E 1044 1044 0.03 0.15 0.75 0.86
9 E 590 590 51.79 2.22 0.75 0.85
9 E 590 590 51.77 2.31 0.75 0.86
10 E 302 302 5.23 3.76 0.75 0.86
10 E 302 302 5.25 3.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12080.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12080.0 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=FULLultrafine/daug-cc-pVDZ
ABC
5.28674 0.28159 0.28159

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.249
C2 0.000 0.000 0.216
C3 0.000 0.000 1.435
H4 0.000 0.000 2.503
H5 0.000 1.027 -1.637
H6 0.889 -0.513 -1.637
H7 -0.889 -0.513 -1.637

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.46512.68443.75281.09751.09751.0975
C21.46511.21932.28772.11792.11792.1179
C32.68441.21931.06843.23873.23873.2387
H43.75282.28771.06844.26544.26544.2654
H51.09752.11793.23874.26541.77871.7787
H61.09752.11793.23874.26541.77871.7787
H71.09752.11793.23874.26541.77871.7787

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 110.655
C2 C1 H6 110.655 C2 C1 H7 110.655
C2 C3 H4 180.000 H5 C1 H6 108.262
H5 C1 H7 108.262 H6 C1 H7 108.262
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability