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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: BLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at BLYP/6-31G**
 hartrees
Energy at 0K-193.942735
Energy at 298.15K-193.947691
Nuclear repulsion energy145.908756
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 BLYP/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 A 3418 3392 64.61      
2 A 3166 3142 17.19      
3 A 3074 3050 9.84      
4 A 3065 3041 9.30      
5 A 2160 2143 14.79      
6 A 1469 1458 0.30      
7 A 1346 1335 6.46      
8 A 1178 1169 0.60      
9 A 1111 1102 0.62      
10 A 1028 1020 4.71      
11 A 936 929 15.58      
12 A 792 786 0.99      
13 A 735 729 2.37      
14 A 583 579 44.74      
15 A 486 483 1.68      
16 A 198 197 0.43      
17 A 3152 3128 0.04      
18 A 3070 3046 21.17      
19 A 1443 1432 0.82      
20 A 1173 1164 0.40      
21 A 1079 1071 1.46      
22 A 1038 1030 5.27      
23 A 853 847 0.29      
24 A 788 781 7.72      
25 A 529 525 29.41      
26 A 478 474 19.57      
27 A 207 205 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 19276.1 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 19127.7 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 BLYP/6-31G**
ABC
0.52342 0.10895 0.10338

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.632 0.000
C2 -1.096 -0.307 0.000
H3 -0.297 1.686 0.000
C4 1.301 0.311 0.756
C5 1.301 0.311 -0.756
C6 -2.028 -1.094 0.000
H7 -2.844 -1.787 0.000
H8 1.786 1.137 1.281
H9 1.349 -0.649 1.271
H10 1.786 1.137 -1.281
H11 1.349 -0.649 -1.271

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.44311.09521.53841.53842.66303.73372.25532.25372.25532.2537
C21.44312.14692.58832.58831.22002.29063.46882.77723.46882.7772
H31.09522.14692.23972.23973.27474.30682.50663.12772.50663.1277
C41.53842.58832.23971.51143.69174.70691.09241.09152.25072.2437
C51.53842.58832.23971.51143.69174.70692.25072.24371.09241.0915
C62.66301.22003.27473.69173.69171.07074.60073.63584.60073.6358
H73.73372.29064.30684.70694.70691.07075.62404.52685.62404.5268
H82.25533.46882.50661.09242.25074.60075.62401.83942.56203.1460
H92.25372.77723.12771.09152.24373.63584.52681.83943.14602.5426
H102.25533.46882.50662.25071.09244.60075.62402.56203.14601.8394
H112.25372.77723.12772.24371.09153.63584.52683.14602.54261.8394

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.609 C1 C4 C5 60.580
C1 C4 H8 117.007 C1 C4 H9 116.929
C1 C5 C4 60.580 C1 C5 H10 117.007
C1 C5 H11 116.929 C2 C1 H3 114.824
C2 C1 C4 120.445 C2 C1 C5 120.445
C2 C6 H7 179.826 H3 C1 C4 115.486
H3 C1 C5 115.486 C4 C1 C5 58.840
C4 C5 H10 118.744 C4 C5 H11 118.191
C5 C4 H8 118.744 C5 C4 H9 118.191
H8 C4 H9 114.756 H10 C5 H11 114.756
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.233      
2 C 0.385      
3 H 0.109      
4 C -0.179      
5 C -0.179      
6 C -0.441      
7 H 0.115      
8 H 0.101      
9 H 0.110      
10 H 0.101      
11 H 0.110      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.813 0.376 0.000 0.896
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.686 2.313 0.000
y 2.313 -27.303 0.000
z 0.000 0.000 -30.829
Traceless
 xyz
x 0.380 2.313 0.000
y 2.313 2.454 0.000
z 0.000 0.000 -2.834
Polar
3z2-r2-5.668
x2-y2-1.383
xy2.313
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 122.608
(<r2>)1/2 11.073