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

using model chemistry: CCSD/daug-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/daug-cc-pVDZ
 hartrees
Energy at 0K-155.490144
Energy at 298.15K 
HF Energy-154.883171
Nuclear repulsion energy107.070145
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/daug-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' 3293 3293 0.12      
2 A' 3125 3125 18.21      
3 A' 3058 3058 71.68      
4 A' 3036 3036 26.14      
5 A' 1850 1850 13.91      
6 A' 1521 1521 4.82      
7 A' 1481 1481 7.51      
8 A' 1401 1401 0.23      
9 A' 1202 1202 3.51      
10 A' 1084 1084 5.86      
11 A' 1064 1064 26.19      
12 A' 984 984 6.35      
13 A' 939 939 12.13      
14 A' 674 674 0.66      
15 A' 319 319 1.45      
16 A" 3129 3129 44.45      
17 A" 3106 3106 16.47      
18 A" 1475 1475 6.72      
19 A" 1105 1105 2.04      
20 A" 1041 1041 0.01      
21 A" 988 988 1.51      
22 A" 684 684 33.27      
23 A" 274 274 12.07      
24 A" 162 162 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 18496.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18496.8 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 CCSD/daug-cc-pVDZ
ABC
0.67472 0.20762 0.16932

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.067 -1.343 0.000
C3 1.161 -0.434 0.000
C4 -0.828 1.421 0.000
H5 -0.348 -1.874 0.922
H6 -0.348 -1.874 -0.922
H7 2.247 -0.399 0.000
H8 -0.192 2.320 0.000
H9 -1.480 1.443 -0.890
H10 -1.480 1.443 0.890

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52411.31341.49212.27752.27752.32052.14942.13962.1396
C21.52411.52832.86681.10031.10032.49933.66563.24823.2482
C31.31341.52832.71972.28082.28081.08633.06863.36003.3600
C41.49212.86682.71973.45463.45463.57331.10171.10331.1033
H52.27751.10032.28083.45461.84413.12404.29703.94533.5047
H62.27751.10032.28083.45461.84413.12404.29703.50473.9453
H72.32052.49931.08633.57333.12403.12403.65294.25144.2514
H82.14943.66563.06861.10174.29704.29703.65291.79431.7943
H92.13963.24823.36001.10333.94533.50474.25141.79431.7801
H102.13963.24823.36001.10333.50473.94534.25141.79431.7801

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 50.968 H1 C2 C6 119.534
C2 C3 C6 24.830 C2 C3 C10 72.583
C2 C6 C3 35.683 C2 C6 H4 49.607
C2 C6 H5 33.071 C3 C2 C6 119.487
C3 C6 H4 51.826 C3 C6 H5 66.155
C3 C10 H7 9.423 C3 C10 H8 65.015
C3 C10 H9 74.639 H4 C6 H5 74.520
C6 C3 C10 86.537 H7 C10 H8 58.596
H7 C10 H9 77.915 H8 C10 H9 60.262
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability