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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B2PLYP=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-311G*
 hartrees
Energy at 0K-157.060851
Energy at 298.15K-157.069464
HF Energy-156.856406
Nuclear repulsion energy124.192891
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 B2PLYP=FULL/6-311G*
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' 3242 3242 36.31      
2 A' 3163 3163 22.09      
3 A' 3152 3152 17.40      
4 A' 3115 3115 24.21      
5 A' 3048 3048 37.53      
6 A' 1543 1543 0.87      
7 A' 1534 1534 10.82      
8 A' 1454 1454 4.50      
9 A' 1419 1419 1.60      
10 A' 1251 1251 0.03      
11 A' 1229 1229 0.02      
12 A' 1066 1066 9.65      
13 A' 1012 1012 9.25      
14 A' 958 958 3.43      
15 A' 809 809 3.82      
16 A' 780 780 4.31      
17 A' 368 368 0.20      
18 A" 3227 3227 0.30      
19 A" 3146 3146 29.26      
20 A" 3113 3113 36.69      
21 A" 1527 1527 2.76      
22 A" 1497 1497 3.59      
23 A" 1217 1217 0.77      
24 A" 1160 1160 0.03      
25 A" 1128 1128 4.39      
26 A" 1078 1078 1.81      
27 A" 880 880 8.16      
28 A" 836 836 6.09      
29 A" 346 346 0.73      
30 A" 223 223 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24259.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24259.1 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 B2PLYP=FULL/6-311G*
ABC
0.52130 0.21128 0.18553

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.347 0.404 0.000
C2 -0.880 1.283 0.000
H3 1.290 0.941 0.000
C4 0.347 -0.901 0.755
C5 0.347 -0.901 -0.755
H6 1.252 -1.204 1.267
H7 1.252 -1.204 -1.267
H8 -0.568 -1.189 1.260
H9 -0.568 -1.189 -1.260
H10 -1.792 0.681 0.000
H11 -0.910 1.926 0.884
H12 -0.910 1.926 -0.884

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50981.08581.50721.50722.23802.23802.22752.22752.15692.16262.1626
C21.50982.19752.61642.61643.51243.51242.79262.79261.09311.09321.0932
H31.08582.19752.20282.20282.49142.49143.09493.09493.09362.56732.5673
C41.50722.61642.20281.51091.08302.23651.08392.23212.76533.09603.5008
C51.50722.61642.20281.51092.23651.08302.23211.08392.76533.50083.0960
H62.23803.51242.49141.08302.23652.53421.81993.11433.79783.82294.3697
H72.23803.51242.49142.23651.08302.53423.11431.81993.79784.36973.8229
H82.22752.79263.09491.08392.23211.81993.11432.52022.56573.15653.7970
H92.22752.79263.09492.23211.08393.11431.81992.52022.56573.79703.1565
H102.15691.09313.09362.76532.76533.79783.79782.56572.56571.76391.7639
H112.16261.09322.56733.09603.50083.82294.36973.15653.79701.76391.7675
H122.16261.09322.56733.50083.09604.36973.82293.79703.15651.76391.7675

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.908 C1 C2 H11 111.366
C1 C2 H12 111.366 C1 C4 H5 59.920
C1 C4 H6 118.628 C1 C4 H8 117.627
C1 H5 C4 59.920 C1 H5 H7 118.628
C1 H5 H9 117.627 C2 C1 C3 114.710
C2 C1 C4 120.278 C2 C1 H5 120.278
C3 C1 C4 115.348 C3 C1 H5 115.348
C4 C1 H5 60.159 C4 H5 H7 118.195
C4 H5 H9 117.748 H5 C4 H6 118.195
H5 C4 H8 117.748 H6 C4 H8 114.255
H7 H5 H9 114.255 H10 C2 H11 107.569
H10 C2 H12 107.569 H11 C2 H12 107.882
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability