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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: B3LYP/CEP-121G

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-121G
 hartrees
Energy at 0K-31.706144
Energy at 298.15K-31.711556
Nuclear repulsion energy75.926540
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-121G
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 3453 3365 66.68      
2 A 3221 3139 33.54      
3 A 3128 3049 12.73      
4 A 3110 3031 12.30      
5 A 2160 2105 21.65      
6 A 1500 1462 0.87      
7 A 1377 1342 4.48      
8 A 1208 1177 0.45      
9 A 1138 1109 1.28      
10 A 1073 1046 9.43      
11 A 943 919 24.33      
12 A 811 791 4.72      
13 A 777 757 76.65      
14 A 746 727 4.47      
15 A 512 499 16.03      
16 A 215 209 1.84      
17 A 3203 3121 0.08      
18 A 3101 3022 29.91      
19 A 1477 1439 4.00      
20 A 1201 1170 1.00      
21 A 1124 1095 0.64      
22 A 1091 1063 11.19      
23 A 903 880 0.29      
24 A 809 789 14.31      
25 A 762 742 91.06      
26 A 552 537 12.59      
27 A 227 222 2.40      

Unscaled Zero Point Vibrational Energy (zpe) 19910.9 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 19403.2 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 B3LYP/CEP-121G
ABC
0.51706 0.10761 0.10193

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.626 0.000
C2 -1.161 -0.252 0.000
H3 -0.236 1.689 0.000
C4 1.287 0.220 0.765
C5 1.287 0.220 -0.765
C6 -2.151 -0.972 0.000
H7 -3.008 -1.605 0.000
H8 1.824 1.011 1.283
H9 1.275 -0.737 1.279
H10 1.824 1.011 -1.283
H11 1.275 -0.737 -1.279

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.45571.08871.55121.55122.68003.74512.26302.26222.26302.2622
C21.45572.15052.60762.60761.22442.28953.48572.79313.48572.7931
H31.08872.15052.24962.24963.27894.30542.51963.13072.51963.1307
C41.55122.60762.24961.53043.71864.72871.08701.08632.26052.2569
C51.55122.60762.24961.53043.71864.72872.26052.25691.08701.0863
C62.68001.22443.27893.71863.71861.06514.62393.66444.62393.6644
H73.74512.28954.30544.72874.72871.06515.64224.55275.64224.5527
H82.26303.48572.51961.08702.26054.62395.64221.83192.56673.1495
H92.26222.79313.13071.08632.25693.66444.55271.83193.14952.5572
H102.26303.48572.51962.26051.08704.62395.64222.56673.14951.8319
H112.26222.79313.13072.25691.08633.66444.55273.14952.55721.8319

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 178.884 C1 C4 C5 60.443
C1 C4 H8 117.043 C1 C4 H9 117.029
C1 C5 C4 60.443 C1 C5 H10 117.043
C1 C5 H11 117.029 C2 C1 H3 114.615
C2 C1 C4 120.238 C2 C1 C5 120.238
C2 C6 H7 179.515 H3 C1 C4 115.789
H3 C1 C5 115.789 C4 C1 C5 59.115
C4 C5 H10 118.468 C4 C5 H11 118.204
C5 C4 H8 118.468 C5 C4 H9 118.204
H8 C4 H9 114.898 H10 C5 H11 114.898
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.246      
2 C 0.997      
3 H 0.192      
4 C -0.349      
5 C -0.349      
6 C -1.692      
7 H 0.308      
8 H 0.155      
9 H 0.169      
10 H 0.155      
11 H 0.169      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.875 0.373 0.000 0.951
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.052 2.651 0.000
y 2.651 -28.059 0.000
z 0.000 0.000 -31.695
Traceless
 xyz
x 0.825 2.651 0.000
y 2.651 2.315 0.000
z 0.000 0.000 -3.140
Polar
3z2-r2-6.280
x2-y2-0.993
xy2.651
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.128 2.258 0.000
y 2.258 6.949 0.000
z 0.000 0.000 5.980


<r2> (average value of r2) Å2
<r2> 100.441
(<r2>)1/2 10.022