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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-193.963239
Energy at 298.15K-193.968421
Nuclear repulsion energy147.236738
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3503 3351 64.88      
2 A 3265 3123 12.23      
3 A 3173 3036 8.34      
4 A 3168 3031 5.97      
5 A 2243 2145 16.05      
6 A 1527 1461 0.42      
7 A 1402 1341 4.02      
8 A 1238 1185 1.17      
9 A 1150 1100 0.67      
10 A 1072 1025 5.38      
11 A 989 946 22.79      
12 A 821 786 1.40      
13 A 769 736 2.20      
14 A 641 613 48.30      
15 A 511 488 5.16      
16 A 206 197 0.79      
17 A 3251 3110 0.08      
18 A 3167 3029 17.09      
19 A 1486 1422 2.27      
20 A 1211 1159 0.58      
21 A 1122 1073 1.76      
22 A 1081 1034 6.97      
23 A 919 879 2.07      
24 A 835 799 8.17      
25 A 575 550 56.36      
26 A 527 504 0.70      
27 A 213 204 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 20030.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19163.5 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 B3PW91/6-31G*
ABC
0.53242 0.11104 0.10543

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.631 0.000
C2 -1.083 -0.313 0.000
H3 -0.307 1.676 0.000
C4 1.283 0.319 0.748
C5 1.283 0.319 -0.748
C6 -1.998 -1.104 0.000
H7 -2.803 -1.804 0.000
H8 1.763 1.143 1.269
H9 1.335 -0.636 1.261
H10 1.763 1.143 -1.269
H11 1.335 -0.636 -1.261

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.43691.08861.51771.51772.64653.71332.23212.23082.23212.2308
C21.43692.13502.56112.56111.20962.27643.43992.74583.43992.7458
H31.08862.13502.21972.21973.25434.28282.48603.10282.48603.1028
C41.51772.56112.21971.49553.65404.66561.08641.08562.23092.2247
C51.51772.56112.21971.49553.65404.66562.23092.22471.08641.0856
C62.64651.20963.25433.65403.65401.06684.56143.59354.56143.5935
H73.71332.27644.28284.66564.66561.06685.58104.48055.58104.4805
H82.23213.43992.48601.08642.23094.56145.58101.82962.53883.1223
H92.23082.74583.10281.08562.22473.59354.48051.82963.12232.5215
H102.23213.43992.48602.23091.08644.56145.58102.53883.12231.8296
H112.23082.74583.10282.22471.08563.59354.48053.12232.52151.8296

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.808 C1 C4 C5 60.483
C1 C4 H8 117.028 C1 C4 H9 116.976
C1 C5 C4 60.483 C1 C5 H10 117.028
C1 C5 H11 116.976 C2 C1 H3 114.719
C2 C1 C4 120.159 C2 C1 C5 120.159
C2 C6 H7 179.912 H3 C1 C4 115.806
H3 C1 C5 115.806 C4 C1 C5 59.034
C4 C5 H10 118.695 C4 C5 H11 118.201
C5 C4 H8 118.695 C5 C4 H9 118.201
H8 C4 H9 114.779 H10 C5 H11 114.779
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.187     -0.053
2 C 0.384     0.000
3 H 0.221     0.150
4 C -0.365     -0.311
5 C -0.365     -0.311
6 C -0.683     -0.393
7 H 0.231     0.271
8 H 0.195     0.147
9 H 0.186     0.175
10 H 0.195     0.147
11 H 0.186     0.175


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.699 -1.176 0.000 1.368
CHELPG        
AIM        
ESP 0.809 0.375 0.000 0.891


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.311 2.604 0.000
y 2.604 -26.723 0.000
z 0.000 0.000 -30.693
Traceless
 xyz
x 0.397 2.604 0.000
y 2.604 2.779 0.000
z 0.000 0.000 -3.176
Polar
3z2-r2-6.352
x2-y2-1.588
xy2.604
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> 120.446
(<r2>)1/2 10.975