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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: CCSD=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD=FULL/cc-pVDZ
 hartrees
Energy at 0K-156.736296
Energy at 298.15K-156.744911
HF Energy-156.106051
Nuclear repulsion energy123.443702
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=FULL/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' 3262 3262 23.42      
2 A' 3180 3180 15.42      
3 A' 3168 3168 14.94      
4 A' 3137 3137 18.96      
5 A' 3056 3056 32.83      
6 A' 1535 1535 1.09      
7 A' 1500 1500 6.64      
8 A' 1445 1445 1.96      
9 A' 1397 1397 2.67      
10 A' 1243 1243 0.14      
11 A' 1220 1220 0.07      
12 A' 1075 1075 3.23      
13 A' 1016 1016 9.07      
14 A' 944 944 1.93      
15 A' 807 807 6.18      
16 A' 777 777 1.11      
17 A' 362 362 0.23      
18 A" 3248 3248 0.20      
19 A" 3160 3160 19.40      
20 A" 3137 3137 29.04      
21 A" 1493 1493 1.61      
22 A" 1467 1467 1.50      
23 A" 1201 1201 0.45      
24 A" 1156 1156 0.20      
25 A" 1116 1116 3.25      
26 A" 1082 1082 0.80      
27 A" 895 895 8.22      
28 A" 823 823 3.71      
29 A" 343 343 0.48      
30 A" 230 230 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24236.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24236.0 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=FULL/cc-pVDZ
ABC
0.51321 0.20964 0.18418

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.350 0.409 0.000
C2 -0.889 1.282 0.000
H3 1.301 0.956 0.000
C4 0.350 -0.902 0.760
C5 0.350 -0.902 -0.760
H6 1.266 -1.208 1.274
H7 1.266 -1.208 -1.274
H8 -0.576 -1.192 1.268
H9 -0.576 -1.192 -1.268
H10 -1.802 0.660 0.000
H11 -0.923 1.930 0.894
H12 -0.923 1.930 -0.894

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51621.09701.51511.51512.25312.25312.24192.24192.16682.17602.1760
C21.51622.21442.62392.62393.53133.53132.79742.79741.10491.10481.1048
H31.09702.21442.22092.22092.51102.51103.12123.12123.11722.58752.5875
C41.51512.62392.22091.51971.09432.25191.09542.24782.76583.10823.5183
C51.51512.62392.22091.51972.25191.09432.24781.09542.76583.51833.1082
H62.25313.53132.51101.09432.25192.54891.84263.13963.81153.84494.3980
H72.25313.53132.51102.25191.09432.54893.13961.84263.81154.39803.8449
H82.24192.79743.12121.09542.24781.84263.13962.53522.55713.16333.8132
H92.24192.79743.12122.24781.09543.13961.84262.53522.55713.81323.1633
H102.16681.10493.11722.76582.76583.81153.81152.55712.55711.78511.7851
H112.17601.10482.58753.10823.51833.84494.39803.16333.81321.78511.7885
H122.17601.10482.58753.51833.10824.39803.84493.81323.16331.78511.7885

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.537 C1 C2 H11 111.272
C1 C2 H12 111.272 C1 C4 H5 59.900
C1 C4 H6 118.519 C1 C4 H8 117.463
C1 H5 C4 59.900 C1 H5 H7 118.519
C1 H5 H9 117.463 C2 C1 C3 114.915
C2 C1 C4 119.903 C2 C1 H5 119.903
C3 C1 C4 115.547 C3 C1 H5 115.547
C4 C1 H5 60.199 C4 H5 H7 118.050
C4 H5 H9 117.616 H5 C4 H6 118.050
H5 C4 H8 117.616 H6 C4 H8 114.595
H7 H5 H9 114.595 H10 C2 H11 107.768
H10 C2 H12 107.768 H11 C2 H12 108.075
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability