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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B3LYP/aug-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 B3LYP/aug-cc-pVDZ
 hartrees
Energy at 0K-157.227493
Energy at 298.15K-157.236058
HF Energy-157.227493
Nuclear repulsion energy123.703124
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/aug-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' 3220 3125 28.76      
2 A' 3140 3047 19.98      
3 A' 3129 3036 13.81      
4 A' 3088 2996 21.87      
5 A' 3019 2930 38.25      
6 A' 1504 1459 1.91      
7 A' 1477 1433 7.84      
8 A' 1412 1370 3.42      
9 A' 1379 1338 2.26      
10 A' 1227 1191 0.00      
11 A' 1204 1168 0.01      
12 A' 1035 1005 6.12      
13 A' 994 964 8.66      
14 A' 935 907 2.72      
15 A' 790 766 4.57      
16 A' 763 740 3.09      
17 A' 369 358 0.18      
18 A" 3206 3111 0.29      
19 A" 3124 3031 26.96      
20 A" 3083 2991 32.32      
21 A" 1466 1423 0.92      
22 A" 1456 1413 3.87      
23 A" 1182 1147 0.60      
24 A" 1125 1092 0.03      
25 A" 1095 1063 3.57      
26 A" 1051 1020 0.96      
27 A" 862 837 8.65      
28 A" 811 787 4.48      
29 A" 343 333 0.55      
30 A" 221 215 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23853.4 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 23147.3 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/aug-cc-pVDZ
ABC
0.51746 0.20979 0.18414

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.346 0.403 0.000
C2 -0.880 1.290 0.000
H3 1.295 0.944 0.000
C4 0.346 -0.904 0.758
C5 0.346 -0.904 -0.758
H6 1.257 -1.210 1.272
H7 1.257 -1.210 -1.272
H8 -0.574 -1.195 1.266
H9 -0.574 -1.195 -1.266
H10 -1.800 0.687 0.000
H11 -0.905 1.937 0.890
H12 -0.905 1.937 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51351.09231.51141.51142.24732.24732.23692.23692.16482.17002.1700
C21.51352.20272.62562.62563.52663.52662.80562.80561.09981.10041.1004
H31.09232.20272.21182.21182.50212.50213.10993.10993.10582.57222.5722
C41.51142.62562.21181.51631.08962.24601.09042.24272.77703.10743.5148
C51.51142.62562.21181.51632.24601.08962.24271.09042.77703.51483.1074
H62.24733.52662.50211.08962.24602.54391.83093.12983.81593.83734.3876
H72.24733.52662.50212.24601.08962.54393.12981.83093.81594.38763.8373
H82.23692.80563.10991.09042.24271.83093.12982.53292.57823.17183.8167
H92.23692.80563.10992.24271.09043.12981.83092.53292.57823.81673.1718
H102.16481.09983.10582.77702.77703.81593.81592.57822.57821.77671.7767
H112.17001.10042.57223.10743.51483.83734.38763.17183.81671.77671.7793
H122.17001.10042.57223.51483.10744.38763.83733.81673.17181.77671.7793

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.868 C1 C2 H11 111.254
C1 C2 H12 111.254 C1 C4 H5 59.892
C1 C4 H6 118.645 C1 C4 H8 117.661
C1 H5 C4 59.892 C1 H5 H7 118.645
C1 H5 H9 117.661 C2 C1 C3 114.443
C2 C1 C4 120.455 C2 C1 H5 120.455
C3 C1 C4 115.371 C3 C1 H5 115.371
C4 C1 H5 60.215 C4 H5 H7 118.136
C4 H5 H9 117.785 H5 C4 H6 118.136
H5 C4 H8 117.785 H6 C4 H8 114.248
H7 H5 H9 114.248 H10 C2 H11 107.705
H10 C2 H12 107.705 H11 C2 H12 107.892
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.845      
2 C 0.655      
3 H -0.648      
4 C 1.256      
5 C 1.256      
6 H -0.650      
7 H -0.650      
8 H -0.642      
9 H -0.642      
10 H -0.350      
11 H -0.215      
12 H -0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.046 0.138 0.000 0.145
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.872 0.274 0.000
y 0.274 -27.849 0.000
z 0.000 0.000 -27.595
Traceless
 xyz
x 1.849 0.274 0.000
y 0.274 -1.116 0.000
z 0.000 0.000 -0.734
Polar
3z2-r2-1.468
x2-y21.977
xy0.274
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.987 -0.551 0.000
y -0.551 7.924 0.000
z 0.000 0.000 7.329


<r2> (average value of r2) Å2
<r2> 84.458
(<r2>)1/2 9.190