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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: BLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/cc-pVTZ
 hartrees
Energy at 0K-157.168610
Energy at 298.15K-157.177094
HF Energy-157.168610
Nuclear repulsion energy123.441621
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 BLYP/cc-pVTZ
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' 3131 3121 32.60      
2 A' 3054 3045 18.46      
3 A' 3050 3041 19.21      
4 A' 2999 2990 23.29      
5 A' 2945 2936 40.07      
6 A' 1471 1466 0.97      
7 A' 1466 1462 6.92      
8 A' 1385 1381 2.51      
9 A' 1361 1357 4.14      
10 A' 1196 1193 0.00      
11 A' 1176 1172 0.02      
12 A' 1015 1012 10.48      
13 A' 965 962 3.36      
14 A' 918 915 3.34      
15 A' 775 773 2.24      
16 A' 739 736 4.12      
17 A' 358 357 0.16      
18 A" 3115 3106 0.29      
19 A" 3047 3038 31.48      
20 A" 2992 2983 34.12      
21 A" 1459 1455 1.94      
22 A" 1440 1436 1.52      
23 A" 1168 1164 0.56      
24 A" 1111 1107 0.03      
25 A" 1080 1077 3.57      
26 A" 1039 1035 1.10      
27 A" 827 824 5.44      
28 A" 803 800 6.54      
29 A" 337 336 0.60      
30 A" 218 217 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23318.8 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 23248.8 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 BLYP/cc-pVTZ
ABC
0.51654 0.20819 0.18272

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.347 0.403 0.000
C2 -0.881 1.298 0.000
H3 1.294 0.942 0.000
C4 0.347 -0.909 0.760
C5 0.347 -0.909 -0.760
H6 1.254 -1.214 1.275
H7 1.254 -1.214 -1.275
H8 -0.571 -1.201 1.267
H9 -0.571 -1.201 -1.267
H10 -1.804 0.703 0.000
H11 -0.904 1.946 0.887
H12 -0.904 1.946 -0.887

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51931.08991.51651.51652.25062.25062.24032.24032.17112.17512.1751
C21.51932.20412.63772.63773.53533.53532.81862.81861.09821.09881.0988
H31.08992.20412.21402.21402.50512.50513.11023.11023.10702.57422.5742
C41.51652.63772.21401.52001.08732.24891.08812.24402.79283.11943.5254
C51.51652.63772.21401.52002.24891.08732.24401.08812.79283.52543.1194
H62.25063.53532.50511.08732.24892.54951.82573.12953.82783.84634.3954
H72.25063.53532.50512.24891.08732.54953.12951.82573.82784.39543.8463
H82.24032.81863.11021.08812.24401.82573.12952.53402.59733.18633.8276
H92.24032.81863.11022.24401.08813.12951.82572.53402.59733.82763.1863
H102.17111.09823.10702.79282.79283.82783.82782.59732.59731.77271.7727
H112.17511.09882.57423.11943.52543.84634.39543.18633.82761.77271.7750
H122.17511.09882.57423.52543.11944.39543.84633.82763.18631.77271.7750

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 111.060 C1 C2 H11 111.347
C1 C2 H12 111.347 C1 C4 H5 59.924
C1 C4 H6 118.686 C1 C4 H8 117.715
C1 H5 C4 59.924 C1 H5 H7 118.686
C1 H5 H9 117.715 C2 C1 C3 114.281
C2 C1 C4 120.653 C2 C1 H5 120.653
C3 C1 C4 115.324 C3 C1 H5 115.324
C4 C1 H5 60.152 C4 H5 H7 118.256
C4 H5 H9 117.770 H5 C4 H6 118.256
H5 C4 H8 117.770 H6 C4 H8 114.115
H7 H5 H9 114.115 H10 C2 H11 107.579
H10 C2 H12 107.579 H11 C2 H12 107.744
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.008      
2 C -0.275      
3 H 0.086      
4 C -0.199      
5 C -0.199      
6 H 0.088      
7 H 0.088      
8 H 0.083      
9 H 0.083      
10 H 0.079      
11 H 0.087      
12 H 0.087      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.043 0.121 0.000 0.128
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.997 0.233 0.000
y 0.233 -27.863 0.000
z 0.000 0.000 -27.619
Traceless
 xyz
x 1.745 0.233 0.000
y 0.233 -1.055 0.000
z 0.000 0.000 -0.689
Polar
3z2-r2-1.379
x2-y21.867
xy0.233
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.855 -0.560 0.000
y -0.560 7.640 0.000
z 0.000 0.000 7.016


<r2> (average value of r2) Å2
<r2> 84.903
(<r2>)1/2 9.214