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: HF/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/aug-cc-pVQZ
 hartrees
Energy at 0K-65.471093
Energy at 298.15K-65.475098
HF Energy-65.471093
Nuclear repulsion energy31.837202
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 HF/aug-cc-pVQZ
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' 3186 2894 23.32      
2 A' 3099 2815 9.13      
3 A' 2647 2405 132.52      
4 A' 1591 1445 2.05      
5 A' 1446 1314 49.56      
6 A' 1343 1220 40.90      
7 A' 1158 1052 74.20      
8 A' 990 899 12.79      
9 A' 639 580 1.60      
10 A" 3227 2932 31.57      
11 A" 2702 2455 202.67      
12 A" 1552 1410 3.43      
13 A" 1143 1039 21.42      
14 A" 727 660 2.31      
15 A" 136 124 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 12792.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 11621.6 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 HF/aug-cc-pVQZ
ABC
3.24730 0.71230 0.65242

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 -0.689 0.000
B2 -0.014 0.878 0.000
H3 1.040 -0.980 0.000
H4 -0.454 -1.130 0.885
H5 -0.454 -1.130 -0.885
H6 0.012 1.492 -1.021
H7 0.012 1.492 1.021

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56661.09351.08291.08292.40762.4076
B21.56662.13612.23842.23841.19161.1916
H31.09352.13611.74331.74332.86482.8648
H41.08292.23841.74331.77073.27512.6665
H51.08292.23841.74331.77072.66653.2751
H62.40761.19162.86483.27512.66652.0423
H72.40761.19162.86482.66653.27512.0423

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.993 C1 B2 H7 120.993
B2 C1 H3 105.454 B2 C1 H4 114.069
B2 C1 H5 114.069 H3 C1 H4 106.449
H3 C1 H5 106.449 H4 C1 H5 109.682
H6 B2 H7 117.950
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.867      
2 B 0.496      
3 H 0.240      
4 H 0.283      
5 H 0.283      
6 H -0.218      
7 H -0.218      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.039 -0.496 0.000 0.497
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.659 -0.146 0.000
y -0.146 -16.686 0.000
z 0.000 0.000 -15.848
Traceless
 xyz
x 2.608 -0.146 0.000
y -0.146 -1.933 0.000
z 0.000 0.000 -0.675
Polar
3z2-r2-1.351
x2-y23.027
xy-0.146
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.579 -0.014 0.000
y -0.014 4.575 0.000
z 0.000 0.000 4.140


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