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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-65.555745
Energy at 298.15K-65.559655
HF Energy-65.555745
Nuclear repulsion energy31.650681
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 B3PW91/3-21G
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' 3080 2960 9.85      
2 A' 2977 2862 3.75      
3 A' 2592 2492 92.20      
4 A' 1529 1470 5.26      
5 A' 1384 1331 74.93      
6 A' 1255 1207 35.22      
7 A' 1095 1053 84.71      
8 A' 978 940 13.77      
9 A' 630 606 0.64      
10 A" 3130 3008 12.94      
11 A" 2669 2565 134.56      
12 A" 1498 1440 7.13      
13 A" 1084 1042 26.82      
14 A" 700 672 0.02      
15 A" 110 106 3.45      

Unscaled Zero Point Vibrational Energy (zpe) 12355.4 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 11876.0 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 B3PW91/3-21G
ABC
3.17877 0.71029 0.64948

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 -0.687 0.000
B2 -0.015 0.877 0.000
H3 1.052 -0.991 0.000
H4 -0.457 -1.136 0.898
H5 -0.457 -1.136 -0.898
H6 0.013 1.497 -1.029
H7 0.013 1.497 1.029

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56401.10991.09711.09712.41442.4144
B21.56402.15202.24812.24811.20191.2019
H31.10992.15201.76201.76202.88672.8867
H41.09712.24811.76201.79673.29662.6774
H51.09712.24811.76201.79672.67743.2966
H62.41441.20192.88673.29662.67742.0589
H72.41441.20192.88672.67743.29662.0589

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.041 C1 B2 H7 121.041
B2 C1 H3 105.935 B2 C1 H4 114.156
B2 C1 H5 114.156 H3 C1 H4 105.946
H3 C1 H5 105.946 H4 C1 H5 109.936
H6 B2 H7 117.849
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.901      
2 B 0.224      
3 H 0.230      
4 H 0.220      
5 H 0.220      
6 H 0.003      
7 H 0.003      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.158 -0.740 0.000 0.757
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.661 -0.206 0.000
y -0.206 -16.173 0.000
z 0.000 0.000 -15.595
Traceless
 xyz
x 2.223 -0.206 0.000
y -0.206 -1.545 0.000
z 0.000 0.000 -0.678
Polar
3z2-r2-1.356
x2-y22.512
xy-0.206
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.664 -0.038 0.000
y -0.038 3.954 0.000
z 0.000 0.000 3.444


<r2> (average value of r2) Å2
<r2> 29.441
(<r2>)1/2 5.426