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 CH3BH2 (methylborane)

using model chemistry: PBE1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/STO-3G
 hartrees
Energy at 0K-65.064546
Energy at 298.15K-65.068447
HF Energy-65.064546
Nuclear repulsion energy31.865803
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 PBE1PBE/STO-3G
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' 3475 3066 4.03      
2 A' 3326 2934 10.69      
3 A' 2997 2644 13.56      
4 A' 1692 1493 1.48      
5 A' 1539 1357 43.65      
6 A' 1430 1262 35.65      
7 A' 1194 1054 107.23      
8 A' 1073 947 14.80      
9 A' 713 629 0.40      
10 A" 3538 3121 0.03      
11 A" 3138 2768 15.62      
12 A" 1666 1469 4.20      
13 A" 1199 1058 23.93      
14 A" 781 689 0.04      
15 A" 112 99 2.70      

Unscaled Zero Point Vibrational Energy (zpe) 13936.1 cm-1
Scaled (by 0.8821) Zero Point Vibrational Energy (zpe) 12293.1 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 PBE1PBE/STO-3G
ABC
3.23382 0.71766 0.65816

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.683 0.000
B2 -0.013 0.877 0.000
H3 1.048 -0.992 0.000
H4 -0.465 -1.125 0.895
H5 -0.465 -1.125 -0.895
H6 0.011 1.477 -1.009
H7 0.011 1.477 1.009

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55931.10451.09591.09592.38422.3842
B21.55932.14862.23872.23871.17481.1748
H31.10452.14861.76241.76242.86202.8620
H41.09592.23871.76241.78983.25952.6478
H51.09592.23871.76241.78982.64783.2595
H62.38421.17482.86203.25952.64782.0189
H72.38421.17482.86202.64783.25952.0189

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.743 C1 B2 H7 120.743
B2 C1 H3 106.275 B2 C1 H4 113.802
B2 C1 H5 113.802 H3 C1 H4 106.438
H3 C1 H5 106.438 H4 C1 H5 109.495
H6 B2 H7 118.461
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.345      
2 B 0.176      
3 H 0.094      
4 H 0.083      
5 H 0.083      
6 H -0.045      
7 H -0.045      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.128 -0.544 0.000 0.559
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.362 -0.171 0.000
y -0.171 -14.646 0.000
z 0.000 0.000 -14.183
Traceless
 xyz
x 2.052 -0.171 0.000
y -0.171 -1.373 0.000
z 0.000 0.000 -0.679
Polar
3z2-r2-1.358
x2-y22.284
xy-0.171
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.380 -0.039 0.000
y -0.039 1.997 0.000
z 0.000 0.000 1.677


<r2> (average value of r2) Å2
<r2> 28.265
(<r2>)1/2 5.316