return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B97D3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/TZVP
 hartrees
Energy at 0K-157.162675
Energy at 298.15K-157.171206
HF Energy-157.162675
Nuclear repulsion energy124.046839
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 B97D3/TZVP
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' 3163 3117 34.56      
2 A' 3083 3039 24.87      
3 A' 3075 3030 17.06      
4 A' 3035 2991 23.82      
5 A' 2968 2925 43.70      
6 A' 1483 1461 0.93      
7 A' 1475 1454 8.65      
8 A' 1396 1376 3.33      
9 A' 1370 1350 2.86      
10 A' 1212 1194 0.00      
11 A' 1188 1171 0.00      
12 A' 1021 1007 9.35      
13 A' 983 969 9.04      
14 A' 929 916 3.44      
15 A' 788 776 4.31      
16 A' 758 747 3.30      
17 A' 366 361 0.22      
18 A" 3147 3102 0.33      
19 A" 3071 3027 34.57      
20 A" 3030 2986 36.47      
21 A" 1467 1446 1.95      
22 A" 1446 1425 2.42      
23 A" 1176 1159 0.84      
24 A" 1115 1099 0.04      
25 A" 1089 1073 4.09      
26 A" 1039 1024 1.77      
27 A" 860 847 7.83      
28 A" 808 797 5.24      
29 A" 342 337 0.76      
30 A" 219 216 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23549.6 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 23210.5 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 B97D3/TZVP
ABC
0.51999 0.21100 0.18534

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.347 0.403 0.000
C2 -0.882 1.283 0.000
H3 1.292 0.945 0.000
C4 0.347 -0.901 0.755
C5 0.347 -0.901 -0.755
H6 1.255 -1.205 1.269
H7 1.255 -1.205 -1.269
H8 -0.572 -1.188 1.261
H9 -0.572 -1.188 -1.261
H10 -1.796 0.675 0.000
H11 -0.912 1.928 0.888
H12 -0.912 1.928 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51201.08931.50691.50692.24112.24112.22862.22862.16012.16732.1673
C21.51202.20092.61742.61743.51733.51732.79152.79151.09721.09761.0976
H31.08932.20092.20682.20682.49722.49723.10063.10063.09982.57152.5715
C41.50692.61742.20681.51091.08672.23981.08752.23462.76503.09863.5049
C51.50692.61742.20681.51092.23981.08672.23461.08752.76503.50493.0986
H62.24113.51732.49721.08672.23982.53881.82673.12093.80173.82824.3776
H72.24113.51732.49722.23981.08672.53883.12091.82673.80174.37763.8282
H82.22862.79153.10061.08752.23461.82673.12092.52222.56103.15623.8000
H92.22862.79153.10062.23461.08753.12091.82672.52222.56103.80003.1562
H102.16011.09723.09982.76502.76503.80173.80172.56102.56101.77171.7717
H112.16731.09762.57153.09863.50493.82824.37763.15623.80001.77171.7758
H122.16731.09762.57153.50493.09864.37763.82823.80003.15621.77171.7758

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.762 C1 C2 H11 111.313
C1 C2 H12 111.313 C1 C4 H5 59.913
C1 C4 H6 118.665 C1 C4 H8 117.499
C1 H5 C4 59.913 C1 H5 H7 118.665
C1 H5 H9 117.499 C2 C1 C3 114.604
C2 C1 C4 120.226 C2 C1 H5 120.226
C3 C1 C4 115.484 C3 C1 H5 115.484
C4 C1 H5 60.174 C4 H5 H7 118.226
C4 H5 H9 117.708 H5 C4 H6 118.226
H5 C4 H8 117.708 H6 C4 H8 114.319
H7 H5 H9 114.319 H10 C2 H11 107.651
H10 C2 H12 107.651 H11 C2 H12 107.986
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.066      
2 C -0.318      
3 H 0.141      
4 C -0.291      
5 C -0.291      
6 H 0.131      
7 H 0.131      
8 H 0.124      
9 H 0.124      
10 H 0.095      
11 H 0.109      
12 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.032 0.137 0.000 0.141
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.512 0.225 0.000
y 0.225 -27.544 0.000
z 0.000 0.000 -27.281
Traceless
 xyz
x 1.900 0.225 0.000
y 0.225 -1.147 0.000
z 0.000 0.000 -0.753
Polar
3z2-r2-1.507
x2-y22.032
xy0.225
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.750 -0.513 0.000
y -0.513 7.533 0.000
z 0.000 0.000 6.978


<r2> (average value of r2) Å2
<r2> 83.850
(<r2>)1/2 9.157