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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-31.730365
Energy at 298.15K-31.735389
Nuclear repulsion energy75.834446
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 B3LYP/CEP-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 3476 3356 79.97      
2 A 3246 3135 27.21      
3 A 3157 3049 11.11      
4 A 3146 3038 12.84      
5 A 2211 2135 23.48      
6 A 1501 1450 0.46      
7 A 1363 1316 5.52      
8 A 1205 1164 1.75      
9 A 1127 1088 1.18      
10 A 1037 1002 7.30      
11 A 949 917 27.50      
12 A 796 769 2.54      
13 A 748 722 3.89      
14 A 657 634 78.65      
15 A 482 465 3.81      
16 A 184 178 0.97      
17 A 3229 3119 0.14      
18 A 3141 3033 26.89      
19 A 1455 1405 2.04      
20 A 1177 1137 1.25      
21 A 1095 1058 3.07      
22 A 1049 1013 9.78      
23 A 884 853 2.49      
24 A 805 777 12.26      
25 A 605 584 85.51      
26 A 488 472 0.21      
27 A 193 186 1.24      

Unscaled Zero Point Vibrational Energy (zpe) 19702.4 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 19026.6 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 B3LYP/CEP-31G*
ABC
0.51341 0.10777 0.10240

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.647 0.000
C2 -1.143 -0.263 0.000
H3 -0.251 1.712 0.000
C4 1.275 0.237 0.762
C5 1.275 0.237 -0.762
C6 -2.136 -1.019 0.000
H7 -2.980 -1.680 0.000
H8 1.819 1.034 1.279
H9 1.255 -0.727 1.277
H10 1.819 1.034 -1.279
H11 1.255 -0.727 -1.277

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.46071.09441.54091.54092.70833.78042.25662.25632.25662.2563
C21.46072.16642.58432.58431.24772.31983.47682.75633.47682.7563
H31.09442.16642.25532.25533.31764.35282.52583.13782.52583.1378
C41.54092.58432.25531.52413.71364.72851.09441.09262.25732.2550
C51.54092.58432.25531.52413.71364.72852.25732.25501.09441.0926
C62.70831.24773.31763.71363.71361.07224.63523.63494.63523.6349
H73.78042.31984.35284.72854.72851.07225.65904.52485.65904.5248
H82.25663.47682.52581.09442.25734.63525.65901.84862.55763.1539
H92.25632.75633.13781.09262.25503.63494.52481.84863.15392.5532
H102.25663.47682.52582.25731.09444.63525.65902.55763.15391.8486
H112.25632.75633.13782.25501.09263.63494.52483.15392.55321.8486

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 178.809 C1 C4 C5 60.362
C1 C4 H8 116.792 C1 C4 H9 116.891
C1 C5 C4 60.362 C1 C5 H10 116.792
C1 C5 H11 116.891 C2 C1 H3 115.211
C2 C1 C4 118.824 C2 C1 C5 118.824
C2 C6 H7 179.246 H3 C1 C4 116.675
H3 C1 C5 116.675 C4 C1 C5 59.277
C4 C5 H10 118.179 C4 C5 H11 118.096
C5 C4 H8 118.179 C5 C4 H9 118.096
H8 C4 H9 115.406 H10 C5 H11 115.406
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.336      
2 C -0.648      
3 H 0.253      
4 C -0.436      
5 C -0.436      
6 C -0.326      
7 H 0.418      
8 H 0.195      
9 H 0.224      
10 H 0.195      
11 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.082 0.450 0.000 1.171
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.913 2.760 0.000
y 2.760 -27.261 0.000
z 0.000 0.000 -31.305
Traceless
 xyz
x 0.370 2.760 0.000
y 2.760 2.848 0.000
z 0.000 0.000 -3.218
Polar
3z2-r2-6.437
x2-y2-1.652
xy2.760
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.003 2.306 0.000
y 2.306 6.611 0.000
z 0.000 0.000 5.828


<r2> (average value of r2) Å2
<r2> 100.071
(<r2>)1/2 10.004