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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-193.406213
Energy at 298.15K-193.411304
HF Energy-192.729484
Nuclear repulsion energy146.861684
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 QCISD/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 3493 3326 50.71      
2 A 3269 3113 15.34      
3 A 3191 3039 7.13      
4 A 3180 3028 6.08      
5 A 2230 2124 4.83      
6 A 1559 1484 0.48      
7 A 1428 1359 4.30      
8 A 1254 1195 1.24      
9 A 1168 1112 1.03      
10 A 1113 1059 5.14      
11 A 995 948 18.40      
12 A 832 793 1.12      
13 A 777 740 2.78      
14 A 591 563 50.02      
15 A 499 475 1.23      
16 A 199 189 0.59      
17 A 3257 3101 0.11      
18 A 3174 3022 15.23      
19 A 1513 1441 1.70      
20 A 1234 1175 0.60      
21 A 1159 1103 1.69      
22 A 1117 1063 4.90      
23 A 952 907 3.94      
24 A 856 816 7.95      
25 A 548 522 32.18      
26 A 464 442 20.93      
27 A 198 189 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 20123.6 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 19163.7 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 QCISD/6-31G*
ABC
0.52716 0.11058 0.10505

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.642 0.000
C2 -1.086 -0.319 0.000
H3 -0.313 1.685 0.000
C4 1.280 0.330 0.751
C5 1.280 0.330 -0.751
C6 -1.989 -1.131 0.000
H7 -2.787 -1.842 0.000
H8 1.767 1.151 1.272
H9 1.331 -0.628 1.262
H10 1.767 1.151 -1.272
H11 1.331 -0.628 -1.262

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.45051.08911.51611.51612.66493.73372.23572.23092.23572.2309
C21.45052.14852.56552.56551.21442.28323.45222.74413.45222.7441
H31.08912.14852.22192.22193.27784.30872.49593.10572.49593.1057
C41.51612.56552.22191.50123.65824.67131.08761.08702.23662.2296
C51.51612.56552.22191.50123.65824.67132.23662.22961.08761.0870
C62.66491.21443.27783.65823.65821.06884.57513.58704.57513.5870
H73.73372.28324.30874.67134.67131.06885.59584.47505.59584.4750
H82.23573.45222.49591.08762.23664.57515.59581.83102.54443.1266
H92.23092.74413.10571.08702.22963.58704.47501.83103.12662.5244
H102.23573.45222.49592.23661.08764.57515.59582.54443.12661.8310
H112.23092.74413.10572.22961.08703.58704.47503.12662.52441.8310

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.526 C1 C4 C5 60.324
C1 C4 H8 117.392 C1 C4 H9 117.011
C1 C5 C4 60.324 C1 C5 H10 117.392
C1 C5 H11 117.011 C2 C1 H3 114.816
C2 C1 C4 119.706 C2 C1 C5 119.706
C2 C6 H7 179.684 H3 C1 C4 116.090
H3 C1 C5 116.090 C4 C1 C5 59.353
C4 C5 H10 118.660 C4 C5 H11 118.076
C5 C4 H8 118.660 C5 C4 H9 118.076
H8 C4 H9 114.712 H10 C5 H11 114.712
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability