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All results from a given calculation for C4H6 (1-Methylcyclopropene)

using model chemistry: CCD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CCD/cc-pVTZ
 hartrees
Energy at 0K-155.610303
Energy at 298.15K 
HF Energy-154.922930
Nuclear repulsion energy108.367296
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 CCD/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' 3317 3097 0.44      
2 A' 3150 2942 14.81      
3 A' 3083 2879 64.43      
4 A' 3062 2859 21.06      
5 A' 1885 1760 11.88      
6 A' 1550 1447 4.34      
7 A' 1507 1408 8.01      
8 A' 1428 1333 0.03      
9 A' 1222 1141 3.48      
10 A' 1110 1037 4.55      
11 A' 1094 1021 31.11      
12 A' 1000 933 5.36      
13 A' 962 899 13.41      
14 A' 693 647 0.60      
15 A' 326 305 1.49      
16 A" 3152 2943 41.47      
17 A" 3127 2920 14.21      
18 A" 1504 1404 7.49      
19 A" 1138 1062 1.72      
20 A" 1069 998 0.21      
21 A" 1009 942 1.82      
22 A" 743 693 31.31      
23 A" 299 280 11.82      
24 A" 159 148 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 18793.7 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 17547.7 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 CCD/cc-pVTZ
ABC
0.69187 0.21239 0.17329

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.177 0.000
C2 -0.033 -1.330 0.000
C3 1.156 -0.400 0.000
C4 -0.853 1.384 0.000
H5 -0.298 -1.859 0.911
H6 -0.298 -1.859 -0.911
H7 2.228 -0.342 0.000
H8 -0.253 2.292 0.000
H9 -1.500 1.389 -0.878
H10 -1.500 1.389 0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50691.29231.47832.25082.25082.28742.13012.11932.1193
C21.50691.50932.83501.08701.08702.46683.62833.21203.2120
C31.29231.50932.68742.25282.25281.07303.03863.32103.3210
C41.47832.83502.68743.41453.41453.53171.08861.09071.0907
H52.25081.08702.25283.41451.82263.08414.25053.89913.4642
H62.25081.08702.25283.41451.82263.08414.25053.46423.8991
H72.28742.46681.07303.53173.08413.08413.61824.20294.2029
H82.13013.62833.03861.08864.25054.25053.61821.77231.7723
H92.11933.21203.32101.09073.89913.46424.20291.77231.7570
H102.11933.21203.32101.09073.46423.89914.20291.77231.7570

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.738 H1 C2 C6 119.516
C2 C3 C6 24.832 C2 C3 C10 72.647
C2 C6 C3 35.669 C2 C6 H4 49.676
C2 C6 H5 33.032 C3 C2 C6 119.499
C3 C6 H4 51.808 C3 C6 H5 66.139
C3 C10 H7 9.383 C3 C10 H8 65.203
C3 C10 H9 74.661 H4 C6 H5 74.521
C6 C3 C10 86.548 H7 C10 H8 58.817
H7 C10 H9 77.935 H8 C10 H9 60.286
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability