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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: PBE1PBE/3-21G*

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/3-21G*
 hartrees
Energy at 0K-65.482295
Energy at 298.15K-65.486207
HF Energy-65.482295
Nuclear repulsion energy31.669108
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/3-21G*
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' 3095 2971 8.82      
2 A' 2991 2871 3.50      
3 A' 2600 2495 89.17      
4 A' 1531 1470 5.73      
5 A' 1387 1331 77.92      
6 A' 1257 1206 34.19      
7 A' 1096 1052 84.10      
8 A' 985 945 13.55      
9 A' 629 604 0.71      
10 A" 3147 3020 11.03      
11 A" 2678 2570 130.21      
12 A" 1500 1440 7.52      
13 A" 1086 1042 27.04      
14 A" 700 672 0.01      
15 A" 113 108 3.52      

Unscaled Zero Point Vibrational Energy (zpe) 12396.6 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 11898.2 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/3-21G*
ABC
3.17858 0.71162 0.65052

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 -0.686 0.000
B2 -0.015 0.877 0.000
H3 1.052 -0.989 0.000
H4 -0.456 -1.135 0.898
H5 -0.456 -1.135 -0.898
H6 0.013 1.496 -1.030
H7 0.013 1.496 1.030

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56251.10951.09661.09662.41292.4129
B21.56252.14912.24652.24651.20211.2021
H31.10952.14911.76151.76152.88342.8834
H41.09662.24651.76151.79653.29522.6754
H51.09662.24651.76151.79652.67543.2952
H62.41291.20212.88343.29522.67542.0597
H72.41291.20212.88342.67543.29522.0597

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.016 C1 B2 H7 121.016
B2 C1 H3 105.836 B2 C1 H4 114.158
B2 C1 H5 114.158 H3 C1 H4 105.964
H3 C1 H5 105.964 H4 C1 H5 109.989
H6 B2 H7 117.897
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.919      
2 B 0.219      
3 H 0.234      
4 H 0.225      
5 H 0.225      
6 H 0.008      
7 H 0.008      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.160 -0.731 0.000 0.749
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.699 -0.206 0.000
y -0.206 -16.199 0.000
z 0.000 0.000 -15.620
Traceless
 xyz
x 2.210 -0.206 0.000
y -0.206 -1.539 0.000
z 0.000 0.000 -0.671
Polar
3z2-r2-1.342
x2-y22.499
xy-0.206
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.650 -0.037 0.000
y -0.037 3.937 0.000
z 0.000 0.000 3.436


<r2> (average value of r2) Å2
<r2> 29.431
(<r2>)1/2 5.425