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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B3LYP/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 B3LYP/cc-pVTZ
 hartrees
Energy at 0K-157.273132
Energy at 298.15K-157.281732
HF Energy-157.273132
Nuclear repulsion energy124.359698
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 B3LYP/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' 3207 3100 28.34      
2 A' 3131 3026 18.07      
3 A' 3124 3020 15.61      
4 A' 3076 2973 22.48      
5 A' 3017 2916 35.99      
6 A' 1515 1464 1.03      
7 A' 1502 1452 8.12      
8 A' 1426 1378 3.43      
9 A' 1400 1353 2.50      
10 A' 1235 1194 0.00      
11 A' 1211 1171 0.00      
12 A' 1054 1019 8.58      
13 A' 998 965 6.56      
14 A' 945 913 3.29      
15 A' 798 771 3.47      
16 A' 768 742 3.91      
17 A' 366 354 0.16      
18 A" 3192 3086 0.26      
19 A" 3120 3015 27.69      
20 A" 3071 2969 31.72      
21 A" 1494 1444 2.00      
22 A" 1475 1426 2.45      
23 A" 1201 1161 0.57      
24 A" 1148 1109 0.12      
25 A" 1112 1074 4.17      
26 A" 1077 1041 0.97      
27 A" 867 838 7.55      
28 A" 825 798 5.75      
29 A" 346 334 0.61      
30 A" 224 217 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23961.3 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 23161.0 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 B3LYP/cc-pVTZ
ABC
0.52377 0.21153 0.18573

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.345 0.400 0.000
C2 -0.878 1.285 0.000
H3 1.286 0.938 0.000
C4 0.345 -0.901 0.754
C5 0.345 -0.901 -0.754
H6 1.248 -1.204 1.265
H7 1.248 -1.204 -1.265
H8 -0.567 -1.189 1.259
H9 -0.567 -1.189 -1.259
H10 -1.792 0.688 0.000
H11 -0.903 1.928 0.883
H12 -0.903 1.928 -0.883

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50951.08371.50361.50362.23402.23402.22362.22362.15602.16112.1611
C21.50952.19142.61582.61583.50983.50982.79392.79391.09191.09221.0922
H31.08372.19142.19882.19882.48852.48853.08963.08963.08782.55932.5593
C41.50362.61582.19881.50761.08112.23231.08202.22852.76723.09453.4982
C51.50362.61582.19881.50762.23231.08112.22851.08202.76723.49823.0945
H62.23403.50982.48851.08112.23232.53001.81533.10883.79753.81914.3648
H72.23403.50982.48852.23231.08112.53003.10881.81533.79754.36483.8191
H82.22362.79393.08961.08202.22851.81533.10882.51752.57063.15813.7971
H92.22362.79393.08962.22851.08203.10881.81532.51752.57063.79713.1581
H102.15601.09193.08782.76722.76723.79753.79752.57062.57061.76281.7628
H112.16111.09222.55933.09453.49823.81914.36483.15813.79711.76281.7652
H122.16111.09222.55933.49823.09454.36483.81913.79713.15811.76281.7652

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.930 C1 C2 H11 111.324
C1 C2 H12 111.324 C1 C4 H5 59.913
C1 C4 H6 118.696 C1 C4 H8 117.704
C1 H5 C4 59.913 C1 H5 H7 118.696
C1 H5 H9 117.704 C2 C1 C3 114.353
C2 C1 C4 120.483 C2 C1 H5 120.483
C3 C1 C4 115.430 C3 C1 H5 115.430
C4 C1 H5 60.174 C4 H5 H7 118.217
C4 H5 H9 117.821 H5 C4 H6 118.217
H5 C4 H8 117.821 H6 C4 H8 114.112
H7 H5 H9 114.112 H10 C2 H11 107.630
H10 C2 H12 107.630 H11 C2 H12 107.828
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.029      
2 C -0.292      
3 H 0.103      
4 C -0.227      
5 C -0.227      
6 H 0.102      
7 H 0.102      
8 H 0.096      
9 H 0.096      
10 H 0.084      
11 H 0.096      
12 H 0.096      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.041 0.124 0.000 0.131
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.702 0.237 0.000
y 0.237 -27.600 0.000
z 0.000 0.000 -27.343
Traceless
 xyz
x 1.770 0.237 0.000
y 0.237 -1.078 0.000
z 0.000 0.000 -0.692
Polar
3z2-r2-1.384
x2-y21.898
xy0.237
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.611 -0.516 0.000
y -0.516 7.354 0.000
z 0.000 0.000 6.790


<r2> (average value of r2) Å2
<r2> 83.684
(<r2>)1/2 9.148