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/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-65.468200
Energy at 298.15K-65.472196
HF Energy-65.468200
Nuclear repulsion energy31.824179
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/Def2TZVPP
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' 3189 2891 23.49      
2 A' 3103 2813 8.89      
3 A' 2648 2400 132.85      
4 A' 1591 1442 2.06      
5 A' 1446 1311 49.85      
6 A' 1342 1216 40.35      
7 A' 1158 1050 74.96      
8 A' 990 898 12.96      
9 A' 640 580 1.63      
10 A" 3231 2928 31.50      
11 A" 2704 2451 203.27      
12 A" 1552 1407 3.42      
13 A" 1143 1036 21.87      
14 A" 726 658 2.30      
15 A" 133 120 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 12797.8 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 11599.9 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/Def2TZVPP
ABC
3.24451 0.71171 0.65189

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.689 0.000
B2 -0.012 0.878 0.000
H3 1.039 -0.990 0.000
H4 -0.457 -1.127 0.885
H5 -0.457 -1.127 -0.885
H6 0.002 1.493 -1.022
H7 0.002 1.493 1.022

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56731.09311.08351.08352.40882.4088
B21.56732.14352.23712.23711.19211.1921
H31.09312.14351.74371.74372.87752.8775
H41.08352.23711.74371.77063.27272.6632
H51.08352.23711.74371.77062.66323.2727
H62.40881.19212.87753.27272.66322.0433
H72.40881.19212.87752.66323.27272.0433

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.007 C1 B2 H7 121.007
B2 C1 H3 105.976 B2 C1 H4 113.864
B2 C1 H5 113.864 H3 C1 H4 106.473
H3 C1 H5 106.473 H4 C1 H5 109.584
H6 B2 H7 117.968
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.287      
2 B 0.153      
3 H 0.063      
4 H 0.073      
5 H 0.073      
6 H -0.038      
7 H -0.038      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.040 -0.497 0.000 0.498
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.664 -0.151 0.000
y -0.151 -16.698 0.000
z 0.000 0.000 -15.869
Traceless
 xyz
x 2.619 -0.151 0.000
y -0.151 -1.932 0.000
z 0.000 0.000 -0.688
Polar
3z2-r2-1.375
x2-y23.034
xy-0.151
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.340 -0.004 0.000
y -0.004 4.410 0.000
z 0.000 0.000 4.024


<r2> (average value of r2) Å2
<r2> 29.456
(<r2>)1/2 5.427