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return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for (propyne)

using model chemistry: B97D3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at B97D3/TZVP
 hartrees
Energy at 0K-116.618091
Energy at 298.15K 
HF Energy-116.618091
Nuclear repulsion energy58.628736
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 B97D3/TZVP
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 3433 3384 56.63 29.08 0.19 0.31
2 A1 2977 2934 22.80 237.88 0.02 0.03
3 A1 2179 2148 9.88 141.18 0.23 0.38
4 A1 1389 1369 0.01 19.76 0.51 0.67
5 A1 929 916 0.28 2.40 0.07 0.14
6 E 3039 2995 10.88 89.23 0.75 0.86
6 E 3039 2995 10.88 89.23 0.75 0.86
7 E 1452 1431 8.18 12.14 0.75 0.86
7 E 1452 1431 8.17 12.14 0.75 0.86
8 E 1032 1017 0.46 0.01 0.75 0.86
8 E 1032 1017 0.46 0.01 0.75 0.86
9 E 606 597 54.51 4.17 0.75 0.86
9 E 606 597 54.51 4.18 0.75 0.86
10 E 321 317 7.79 11.53 0.75 0.86
10 E 321 316 7.79 11.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11902.6 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 11731.2 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 B97D3/TZVP
ABC
5.31737 0.28508 0.28508

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.240
C2 0.000 0.000 0.216
C3 0.000 0.000 1.425
H4 0.000 0.000 2.491
H5 0.000 1.024 -1.633
H6 0.887 -0.512 -1.633
H7 -0.887 -0.512 -1.633

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45582.66483.73071.09701.09701.0970
C21.45581.20902.27492.11382.11382.1138
C32.66481.20901.06593.22513.22513.2251
H43.73072.27491.06594.24944.24944.2494
H51.09702.11383.22514.24941.77361.7736
H61.09702.11383.22514.24941.77361.7736
H71.09702.11383.22514.24941.77361.7736

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 111.018
C2 C1 H6 111.018 C2 C1 H7 111.018
C2 C3 H4 180.000 H5 C1 H6 107.882
H5 C1 H7 107.882 H6 C1 H7 107.882
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.470      
2 C 0.035      
3 C -0.121      
4 H 0.128      
5 H 0.143      
6 H 0.143      
7 H 0.143      


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 -0.857 0.857
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.660 0.000 0.000
y 0.000 -19.660 0.000
z 0.000 0.000 -14.044
Traceless
 xyz
x -2.808 0.000 0.000
y 0.000 -2.808 0.000
z 0.000 0.000 5.616
Polar
3z2-r211.232
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 3.425 0.000 0.000
y 0.000 3.425 0.000
z 0.000 0.000 7.504


<r2> (average value of r2) Å2
<r2> 50.149
(<r2>)1/2 7.082