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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at G3B3
 hartrees
Energy at 0K-193.878490
Energy at 298.15K-193.872250
Nuclear repulsion energy 
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/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 3498 3359 64.30      
2 A 3249 3120 15.77      
3 A 3160 3035 9.38      
4 A 3154 3029 7.49      
5 A 2238 2149 13.66      
6 A 1528 1467 0.31      
7 A 1401 1346 5.21      
8 A 1228 1179 1.07      
9 A 1151 1105 0.70      
10 A 1073 1030 4.69      
11 A 974 935 19.70      
12 A 819 787 1.34      
13 A 763 733 2.66      
14 A 634 609 45.31      
15 A 509 489 4.67      
16 A 207 199 0.64      
17 A 3235 3107 0.06      
18 A 3155 3030 18.95      
19 A 1493 1434 1.39      
20 A 1214 1166 0.49      
21 A 1125 1080 1.29      
22 A 1084 1041 5.79      
23 A 906 870 1.26      
24 A 827 794 8.38      
25 A 566 544 50.98      
26 A 524 503 2.15      
27 A 215 206 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 19963.4 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 19170.9 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/6-31G*
ABC
0.53016 0.11063 0.10500

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.632 0.000
C2 -1.088 -0.311 0.000
H3 -0.303 1.677 0.000
C4 1.287 0.316 0.750
C5 1.287 0.316 -0.750
C6 -2.004 -1.100 0.000
H7 -2.811 -1.797 0.000
H8 1.770 1.138 1.272
H9 1.338 -0.639 1.263
H10 1.770 1.138 -1.272
H11 1.338 -0.639 -1.263

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.43961.08851.52301.52302.64853.71442.23752.23602.23752.2360
C21.43962.13742.56872.56871.20892.27483.44742.75443.44742.7544
H31.08852.13742.22372.22373.25624.28402.49143.10682.49143.1068
C41.52302.56872.22371.50003.66094.67141.08631.08552.23502.2290
C51.52302.56872.22371.50003.66094.67142.23502.22901.08631.0855
C62.64851.20893.25623.66093.66091.06594.56823.60224.56823.6022
H73.71442.27484.28404.67144.67141.06595.58674.48845.58674.4884
H82.23753.44742.49141.08632.23504.56825.58671.82852.54353.1258
H92.23602.75443.10681.08552.22903.60224.48841.82853.12582.5270
H102.23753.44742.49142.23501.08634.56825.58672.54353.12581.8285
H112.23602.75443.10682.22901.08553.60224.48843.12582.52701.8285

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.793 C1 C4 C5 60.497
C1 C4 H8 117.107 C1 C4 H9 117.026
C1 C5 C4 60.497 C1 C5 H10 117.107
C1 C5 H11 117.026 C2 C1 H3 114.721
C2 C1 C4 120.196 C2 C1 C5 120.196
C2 C6 H7 179.895 H3 C1 C4 115.776
H3 C1 C5 115.776 C4 C1 C5 59.006
C4 C5 H10 118.681 C4 C5 H11 118.231
C5 C4 H8 118.681 C5 C4 H9 118.231
H8 C4 H9 114.690 H10 C5 H11 114.690
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.154 0.399   -0.028
2 C 0.429 -0.200   -0.011
3 H 0.196 0.098   0.135
4 C -0.325 -0.448   -0.283
5 C -0.325 -0.448   -0.283
6 C -0.673 -0.285   -0.376
7 H 0.192 0.225   0.260
8 H 0.170 0.168   0.133
9 H 0.160 0.162   0.160
10 H 0.170 0.168   0.133
11 H 0.160 0.162   0.160


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.661 -1.113 0.000 1.295
CHELPG 0.592 -1.071 0.000 1.224
AIM        
ESP 0.780 0.365 0.000 0.862


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 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> 120.970
(<r2>)1/2 10.999