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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-157.165265
Energy at 298.15K-157.173837
HF Energy-157.165265
Nuclear repulsion energy123.913898
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 B3PW91/cc-pVDZ
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' 3232 3119 20.78      
2 A' 3149 3039 20.47      
3 A' 3136 3026 13.04      
4 A' 3114 3005 13.64      
5 A' 3033 2927 36.28      
6 A' 1501 1448 1.90      
7 A' 1468 1417 8.67      
8 A' 1414 1364 2.15      
9 A' 1372 1324 2.26      
10 A' 1235 1192 0.07      
11 A' 1204 1162 0.02      
12 A' 1052 1015 2.45      
13 A' 1005 970 10.97      
14 A' 934 901 3.34      
15 A' 803 774 7.15      
16 A' 770 743 0.84      
17 A' 363 350 0.24      
18 A" 3218 3105 0.22      
19 A" 3130 3020 21.85      
20 A" 3111 3002 25.66      
21 A" 1461 1409 2.29      
22 A" 1433 1383 2.73      
23 A" 1180 1139 0.51      
24 A" 1127 1087 0.30      
25 A" 1096 1058 5.22      
26 A" 1054 1017 1.06      
27 A" 887 855 7.53      
28 A" 809 781 4.36      
29 A" 342 330 0.69      
30 A" 228 220 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23927.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 23090.0 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 B3PW91/cc-pVDZ
ABC
0.51972 0.21070 0.18516

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.345 0.402 0.000
C2 -0.877 1.286 0.000
H3 1.297 0.944 0.000
C4 0.345 -0.902 0.754
C5 0.345 -0.902 -0.754
H6 1.258 -1.207 1.272
H7 1.258 -1.207 -1.272
H8 -0.577 -1.194 1.264
H9 -0.577 -1.194 -1.264
H10 -1.801 0.685 0.000
H11 -0.904 1.935 0.890
H12 -0.904 1.935 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50811.09521.50681.50682.24502.24502.23502.23502.16502.16912.1691
C21.50812.20062.61712.61713.51983.51982.79892.79891.10221.10261.1026
H31.09522.20062.21002.21002.49942.49943.11153.11153.10902.57302.5730
C41.50682.61712.21001.50891.09262.24301.09352.23822.77403.10343.5097
C51.50682.61712.21001.50892.24301.09262.23821.09352.77403.50973.1034
H62.24503.51982.49941.09262.24302.54311.83553.13003.81523.83374.3847
H72.24503.51982.49942.24301.09262.54313.13001.83553.81524.38473.8337
H82.23502.79893.11151.09352.23821.83553.13002.52762.57383.16833.8130
H92.23502.79893.11152.23821.09353.13001.83552.52762.57383.81303.1683
H102.16501.10223.10902.77402.77403.81523.81522.57382.57381.77791.7779
H112.16911.10262.57303.10343.50973.83374.38473.16833.81301.77791.7807
H122.16911.10262.57303.50973.10344.38473.83373.81303.16831.77791.7807

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 111.121 C1 C2 H11 111.425
C1 C2 H12 111.425 C1 C4 H5 59.954
C1 C4 H6 118.599 C1 C4 H8 117.652
C1 H5 C4 59.954 C1 H5 H7 118.599
C1 H5 H9 117.652 C2 C1 C3 114.477
C2 C1 C4 120.467 C2 C1 H5 120.467
C3 C1 C4 115.369 C3 C1 H5 115.369
C4 C1 H5 60.092 C4 H5 H7 118.249
C4 H5 H9 117.763 H5 C4 H6 118.249
H5 C4 H8 117.763 H6 C4 H8 114.203
H7 H5 H9 114.203 H10 C2 H11 107.483
H10 C2 H12 107.483 H11 C2 H12 107.704
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.177      
2 C -0.024      
3 H 0.019      
4 C -0.055      
5 C -0.055      
6 H 0.044      
7 H 0.044      
8 H 0.041      
9 H 0.041      
10 H 0.032      
11 H 0.045      
12 H 0.045      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.017 0.134 0.000 0.135
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D ÅAn error occurred on the server when processing the URL. Please contact the system administrator.

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