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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: LSDA/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/cc-pVTZ
 hartrees
Energy at 0K-156.388266
Energy at 298.15K-156.396765
HF Energy-156.388266
Nuclear repulsion energy125.170709
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 LSDA/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' 3155 3121 10.10      
2 A' 3074 3041 12.34      
3 A' 3064 3030 6.07      
4 A' 3028 2995 14.89      
5 A' 2955 2922 25.26      
6 A' 1458 1442 2.94      
7 A' 1421 1405 12.99      
8 A' 1371 1356 4.37      
9 A' 1328 1313 3.56      
10 A' 1213 1200 0.02      
11 A' 1175 1162 0.10      
12 A' 1031 1020 0.91      
13 A' 980 969 22.71      
14 A' 906 896 2.09      
15 A' 801 792 8.66      
16 A' 753 745 0.36      
17 A' 351 347 0.26      
18 A" 3142 3108 0.22      
19 A" 3060 3027 15.41      
20 A" 3032 2999 16.18      
21 A" 1410 1395 2.25      
22 A" 1390 1374 8.50      
23 A" 1146 1134 0.81      
24 A" 1091 1079 0.61      
25 A" 1065 1053 5.25      
26 A" 1021 1010 1.75      
27 A" 883 873 6.33      
28 A" 785 777 5.68      
29 A" 339 335 0.84      
30 A" 226 224 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23326.1 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 23071.8 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 LSDA/cc-pVTZ
ABC
0.52551 0.21710 0.19091

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.348 0.407 0.000
C2 -0.878 1.250 0.000
H3 1.294 0.955 0.000
C4 0.348 -0.883 0.747
C5 0.348 -0.883 -0.747
H6 1.256 -1.194 1.263
H7 1.256 -1.194 -1.263
H8 -0.577 -1.161 1.255
H9 -0.577 -1.161 -1.255
H10 -1.777 0.614 0.000
H11 -0.932 1.897 0.889
H12 -0.932 1.897 -0.889

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.48841.09321.49001.49002.23182.23182.21102.21102.13532.15582.1558
C21.48842.19192.57132.57133.48193.48192.73532.73531.10161.10051.1005
H31.09322.19192.19752.19752.49262.49263.09083.09083.08982.57472.5747
C41.49002.57132.19751.49351.08992.22741.09152.22232.70453.06303.4696
C51.49002.57132.19751.49352.22741.08992.22231.09152.70453.46963.0630
H62.23183.48192.49261.08992.22742.52661.83343.11463.75013.80444.3551
H72.23183.48192.49262.22741.08992.52663.11461.83343.75014.35513.8044
H82.21102.73533.09081.09152.22231.83343.11462.50912.48323.10013.7514
H92.21102.73533.09082.22231.09153.11461.83342.50912.48323.75143.1001
H102.13531.10163.08982.70452.70453.75013.75012.48322.48321.77521.7752
H112.15581.10052.57473.06303.46963.80444.35513.10013.75141.77521.7784
H122.15581.10052.57473.46963.06304.35513.80443.75143.10011.77521.7784

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.168 C1 C2 H11 111.885
C1 C2 H12 111.885 C1 C4 H5 59.924
C1 C4 H6 118.963 C1 C4 H8 117.006
C1 H5 C4 59.924 C1 H5 H7 118.963
C1 H5 H9 117.006 C2 C1 C3 115.364
C2 C1 C4 119.379 C2 C1 H5 119.379
C3 C1 C4 115.722 C3 C1 H5 115.722
C4 C1 H5 60.153 C4 H5 H7 118.293
C4 H5 H9 117.726 H5 C4 H6 118.293
H5 C4 H8 117.726 H6 C4 H8 114.382
H7 H5 H9 114.382 H10 C2 H11 107.442
H10 C2 H12 107.442 H11 C2 H12 107.808
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.075      
2 C -0.343      
3 H 0.129      
4 C -0.259      
5 C -0.259      
6 H 0.121      
7 H 0.121      
8 H 0.115      
9 H 0.115      
10 H 0.100      
11 H 0.118      
12 H 0.118      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.049 0.134 0.000 0.142
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.561 0.156 0.000
y 0.156 -27.582 0.000
z 0.000 0.000 -27.340
Traceless
 xyz
x 1.900 0.156 0.000
y 0.156 -1.131 0.000
z 0.000 0.000 -0.769
Polar
3z2-r2-1.538
x2-y22.021
xy0.156
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.880 -0.540 0.000
y -0.540 7.530 0.000
z 0.000 0.000 6.960


<r2> (average value of r2) Å2
<r2> 82.319
(<r2>)1/2 9.073