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All results from a given calculation for CH3CCH (propyne)

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

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/6-31+G**
 hartrees
Energy at 0K-116.535618
Energy at 298.15K 
HF Energy-116.395375
Nuclear repulsion energy58.522439
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/6-31+G**
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 3510 3338 58.22      
2 A1 3082 2931 19.43      
3 A1 2199 2091 5.27      
4 A1 1440 1369 0.10      
5 A1 947 900 1.02      
6 E 3158 3003 7.75      
6 E 3158 3003 7.75      
7 E 1507 1433 8.16      
7 E 1507 1433 8.16      
8 E 1071 1018 0.26      
8 E 1071 1018 0.26      
9 E 606 576 68.04      
9 E 606 576 68.04      
10 E 324 308 6.07      
10 E 324 308 6.07      

Unscaled Zero Point Vibrational Energy (zpe) 12254.3 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 11653.8 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/6-31+G**
ABC
5.35385 0.28328 0.28328

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.246
C2 0.000 0.000 0.216
C3 0.000 0.000 1.431
H4 0.000 0.000 2.494
H5 0.000 1.020 -1.633
H6 0.884 -0.510 -1.633
H7 -0.884 -0.510 -1.633

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.46212.67653.74011.09141.09141.0914
C21.46211.21432.27802.11192.11192.1119
C32.67651.21431.06373.22883.22883.2288
H43.74012.27801.06374.25134.25134.2513
H51.09142.11193.22884.25131.76761.7676
H61.09142.11193.22884.25131.76761.7676
H71.09142.11193.22884.25131.76761.7676

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 110.761
C2 C1 H6 110.761 C2 C1 H7 110.761
C2 C3 H4 180.000 H5 C1 H6 108.151
H5 C1 H7 108.151 H6 C1 H7 108.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability