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

using model chemistry: CCSD/6-311G**

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/6-311G**
 hartrees
Energy at 0K-155.518032
Energy at 298.15K 
HF Energy-154.904047
Nuclear repulsion energy107.782213
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/6-311G**
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' 3305 3305 0.08      
2 A' 3141 3141 18.88      
3 A' 3071 3071 66.66      
4 A' 3055 3055 25.63      
5 A' 1866 1866 11.69      
6 A' 1551 1551 5.86      
7 A' 1511 1511 7.39      
8 A' 1431 1431 0.10      
9 A' 1223 1223 2.83      
10 A' 1104 1104 9.22      
11 A' 1092 1092 29.28      
12 A' 995 995 4.95      
13 A' 956 956 12.87      
14 A' 688 688 0.48      
15 A' 325 325 1.35      
16 A" 3138 3138 52.41      
17 A" 3120 3120 19.84      
18 A" 1504 1504 7.46      
19 A" 1136 1136 2.44      
20 A" 1063 1063 0.06      
21 A" 1007 1007 1.46      
22 A" 714 714 31.71      
23 A" 291 291 11.88      
24 A" 151 151 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 18717.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18717.6 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/6-311G**
ABC
0.68424 0.21018 0.17148

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.178 0.000
C2 -0.043 -1.335 0.000
C3 1.160 -0.412 0.000
C4 -0.848 1.398 0.000
H5 -0.315 -1.866 0.916
H6 -0.315 -1.866 -0.916
H7 2.238 -0.360 0.000
H8 -0.234 2.304 0.000
H9 -1.496 1.407 -0.885
H10 -1.496 1.407 0.885

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51381.30161.48572.26222.26222.30152.13912.12842.1284
C21.51381.51692.84931.09331.09332.48033.64453.22703.2270
C31.30161.51692.70342.26562.26561.07853.05293.33843.3384
C41.48572.84932.70343.43203.43203.55131.09461.09641.0964
H52.26221.09332.26563.43201.83203.10254.27073.91803.4799
H62.26221.09332.26563.43201.83203.10254.27073.47993.9180
H72.30152.48031.07853.55133.10253.10253.63424.22424.2242
H82.13913.64453.05291.09464.27074.27073.63421.78311.7831
H92.12843.22703.33841.09643.91803.47994.22421.78311.7692
H102.12843.22703.33841.09643.47993.91804.22421.78311.7692

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 50.870 H1 C2 C6 119.514
C2 C3 C6 24.818 C2 C3 C10 72.577
C2 C6 C3 35.617 C2 C6 H4 49.685
C2 C6 H5 33.089 C3 C2 C6 119.565
C3 C6 H4 51.864 C3 C6 H5 66.152
C3 C10 H7 9.399 C3 C10 H8 65.144
C3 C10 H9 74.635 H4 C6 H5 74.520
C6 C3 C10 86.486 H7 C10 H8 58.748
H7 C10 H9 77.912 H8 C10 H9 60.258
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability