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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-193.803350
Energy at 298.15K-193.808482
HF Energy-193.590768
Nuclear repulsion energy147.101157
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/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' 3517 3339 60.88      
2 A' 3285 3118 13.69      
3 A' 3198 3035 7.82      
4 A' 3191 3029 6.05      
5 A' 2208 2096 8.32      
6 A' 1549 1470 0.34      
7 A' 1417 1345 5.05      
8 A' 1244 1181 1.19      
9 A' 1163 1104 0.86      
10 A' 1093 1038 5.15      
11 A' 988 937 19.41      
12 A' 830 787 1.19      
13 A' 772 733 2.74      
14 A' 611 580 47.96      
15 A' 504 479 2.60      
16 A' 202 192 0.61      
17 A" 3272 3106 0.12      
18 A" 3188 3026 15.83      
19 A" 1511 1434 1.42      
20 A" 1230 1167 0.49      
21 A" 1143 1085 1.70      
22 A" 1102 1046 5.53      
23 A" 925 878 1.98      
24 A" 842 800 8.37      
25 A" 553 525 38.27      
26 A" 496 471 14.69      
27 A" 208 197 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 20119.4 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 19097.3 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/6-31G*
ABC
0.53006 0.11085 0.10529

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.619 0.149 0.000
C2 -0.564 0.977 0.000
H3 1.554 0.702 0.000
C4 0.619 -1.167 0.749
C5 0.619 -1.167 -0.749
C6 -1.559 1.673 0.000
H7 -2.432 2.284 0.000
H8 1.530 -1.444 1.269
H9 -0.295 -1.444 1.262
H10 1.530 -1.444 -1.269
H11 -0.295 -1.444 -1.262

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.44391.08631.51491.51492.65803.72322.23142.22862.23142.2286
C21.44392.13572.56132.56131.21412.27933.44362.74363.44362.7436
H31.08632.13572.22052.22053.26094.28802.49343.10132.49343.1013
C41.51492.56132.22051.49853.65674.66661.08481.08402.23132.2263
C51.51492.56132.22051.49853.65674.66662.23132.22631.08481.0840
C62.65801.21413.26093.65673.65671.06524.56823.59224.56823.5922
H73.72322.27934.28804.66664.66661.06525.58594.47795.58594.4779
H82.23143.44362.49341.08482.23134.56825.58591.82552.53733.1200
H92.22862.74363.10131.08402.22633.59224.47791.82553.12002.5233
H102.23143.44362.49342.23131.08484.56825.58592.53733.12001.8255
H112.22862.74363.10132.22631.08403.59224.47793.12002.52331.8255

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.942 C1 C4 C5 60.357
C1 C4 H8 117.302 C1 C4 H9 117.110
C1 C5 C4 60.357 C1 C5 H10 117.302
C1 C5 H11 117.110 C2 C1 H3 114.407
C2 C1 C4 119.900 C2 C1 C5 119.900
C2 C6 H7 179.951 H3 C1 C4 116.254
H3 C1 C5 116.254 C4 C1 C5 59.286
C4 C5 H10 118.607 C4 C5 H11 118.210
C5 C4 H8 118.607 C5 C4 H9 118.210
H8 C4 H9 114.643 H10 C5 H11 114.643
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.262      
2 C 0.265      
3 H 0.192      
4 C -0.322      
5 C -0.322      
6 C -0.493      
7 H 0.229      
8 H 0.173      
9 H 0.184      
10 H 0.173      
11 H 0.184      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.749 -2.482 0.000
y -2.482 7.302 0.000
z 0.000 0.000 5.125


<r2> (average value of r2) Å2
<r2> 120.814
(<r2>)1/2 10.992