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

using model chemistry: CCSD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CCSD/cc-pVDZ
 hartrees
Energy at 0K-155.466336
Energy at 298.15K 
HF Energy-154.877856
Nuclear repulsion energy107.119368
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 CCSD/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' 3301 3127 0.14      
2 A' 3158 2991 16.37      
3 A' 3073 2911 62.47      
4 A' 3061 2900 28.43      
5 A' 1866 1768 10.74      
6 A' 1525 1444 5.97      
7 A' 1482 1404 7.22      
8 A' 1411 1336 0.71      
9 A' 1218 1154 2.22      
10 A' 1101 1043 13.73      
11 A' 1075 1018 20.21      
12 A' 991 939 5.63      
13 A' 946 896 11.69      
14 A' 684 648 0.63      
15 A' 320 303 1.34      
16 A" 3144 2978 45.31      
17 A" 3136 2971 21.29      
18 A" 1479 1401 6.92      
19 A" 1115 1056 1.56      
20 A" 1046 991 0.27      
21 A" 992 940 1.85      
22 A" 714 676 27.14      
23 A" 290 275 10.29      
24 A" 153 145 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 18640.2 cm-1
Scaled (by 0.9473) Zero Point Vibrational Energy (zpe) 17657.9 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 CCSD/cc-pVDZ
ABC
0.67616 0.20785 0.16959

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.062 -1.340 0.000
C3 1.162 -0.432 0.000
C4 -0.832 1.417 0.000
H5 -0.345 -1.874 0.923
H6 -0.345 -1.874 -0.923
H7 2.250 -0.393 0.000
H8 -0.200 2.322 0.000
H9 -1.486 1.438 -0.891
H10 -1.486 1.438 0.891

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52141.31321.49032.27822.27822.32202.15092.14052.1405
C21.52141.52342.86241.10341.10342.49863.66443.24613.2461
C31.31321.52342.71882.28042.28041.08933.07233.36133.3613
C41.49032.86242.71883.45223.45223.57381.10341.10511.1051
H52.27821.10342.28043.45221.84673.12744.29843.94443.5028
H62.27821.10342.28043.45221.84673.12744.29843.50283.9444
H72.32202.49861.08933.57383.12743.12743.65694.25454.2545
H82.15093.66443.07231.10344.29844.29843.65691.79631.7963
H92.14053.24613.36131.10513.94443.50284.25451.79631.7810
H102.14053.24613.36131.10513.50283.94444.25451.79631.7810

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 51.098 H1 C2 C6 119.587
C2 C3 C6 24.875 C2 C3 C10 72.485
C2 C6 C3 35.503 C2 C6 H4 49.555
C2 C6 H5 33.199 C3 C2 C6 119.622
C3 C6 H4 51.849 C3 C6 H5 66.115
C3 C10 H7 9.458 C3 C10 H8 65.092
C3 C10 H9 74.637 H4 C6 H5 74.487
C6 C3 C10 86.484 H7 C10 H8 58.640
H7 C10 H9 77.918 H8 C10 H9 60.281
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability