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: mPW1PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/TZVP
 hartrees
Energy at 0K-65.943795
Energy at 298.15K-65.947739
HF Energy-65.943795
Nuclear repulsion energy31.877521
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 mPW1PW91/TZVP
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' 3098 2956 12.78      
2 A' 2997 2860 3.55      
3 A' 2576 2457 110.00      
4 A' 1480 1412 4.12      
5 A' 1332 1271 78.05      
6 A' 1248 1191 17.63      
7 A' 1084 1034 65.75      
8 A' 980 935 12.09      
9 A' 556 531 0.70      
10 A" 3150 3005 14.02      
11 A" 2648 2527 150.95      
12 A" 1433 1367 5.86      
13 A" 1063 1015 19.94      
14 A" 686 655 0.64      
15 A" 164 157 2.19      

Unscaled Zero Point Vibrational Energy (zpe) 12248.3 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 11684.8 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 mPW1PW91/TZVP
ABC
3.21409 0.72281 0.65977

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 -0.681 0.000
B2 -0.019 0.869 0.000
H3 1.052 -0.945 0.000
H4 -0.437 -1.143 0.895
H5 -0.437 -1.143 -0.895
H6 0.015 1.485 -1.026
H7 0.015 1.485 1.026

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55001.10341.09061.09062.39712.3971
B21.55002.10712.24172.24171.19741.1974
H31.10342.10711.74901.74902.83502.8350
H41.09062.24171.74901.78943.28672.6701
H51.09062.24171.74901.78942.67013.2867
H62.39711.19742.83503.28672.67012.0526
H72.39711.19742.83502.67013.28672.0526

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.959 C1 B2 H7 120.959
B2 C1 H3 103.868 B2 C1 H4 115.084
B2 C1 H5 115.084 H3 C1 H4 105.719
H3 C1 H5 105.719 H4 C1 H5 110.246
H6 B2 H7 117.981
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.448      
2 B 0.085      
3 H 0.129      
4 H 0.135      
5 H 0.135      
6 H -0.018      
7 H -0.018      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.119 -0.676 0.000 0.687
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.669 -0.181 0.000
y -0.181 -16.413 0.000
z 0.000 0.000 -15.614
Traceless
 xyz
x 2.344 -0.181 0.000
y -0.181 -1.772 0.000
z 0.000 0.000 -0.573
Polar
3z2-r2-1.145
x2-y22.744
xy-0.181
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.124 -0.012 0.000
y -0.012 4.646 0.000
z 0.000 0.000 4.081


<r2> (average value of r2) Å2
<r2> 29.192
(<r2>)1/2 5.403