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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-65.559424
Energy at 298.15K-65.563337
HF Energy-65.559424
Nuclear repulsion energy31.689449
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 mPW1PW91/3-21G*
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' 3099 2943 9.37      
2 A' 2996 2845 3.53      
3 A' 2605 2474 91.85      
4 A' 1537 1459 5.59      
5 A' 1393 1323 76.57      
6 A' 1262 1198 35.51      
7 A' 1100 1045 86.33      
8 A' 984 934 13.75      
9 A' 634 602 0.58      
10 A" 3149 2991 11.93      
11 A" 2683 2547 134.86      
12 A" 1506 1430 7.43      
13 A" 1090 1035 27.28      
14 A" 703 667 0.03      
15 A" 110 105 3.41      

Unscaled Zero Point Vibrational Energy (zpe) 12424.6 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 11798.4 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 mPW1PW91/3-21G*
ABC
3.18704 0.71181 0.65091

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

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 1.051 -0.990 0.000
H4 -0.456 -1.134 0.897
H5 -0.456 -1.134 -0.897
H6 0.013 1.495 -1.028
H7 0.013 1.495 1.028

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56261.10811.09541.09542.41162.4116
B21.56262.14962.24522.24521.20031.2003
H31.10812.14961.75971.75972.88312.8831
H41.09542.24521.75971.79393.29212.6737
H51.09542.24521.75971.79392.67373.2921
H62.41161.20032.88313.29212.67372.0564
H72.41161.20032.88312.67373.29212.0564

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.023 C1 B2 H7 121.023
B2 C1 H3 105.943 B2 C1 H4 114.121
B2 C1 H5 114.121 H3 C1 H4 105.985
H3 C1 H5 105.985 H4 C1 H5 109.934
H6 B2 H7 117.885
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.917      
2 B 0.229      
3 H 0.233      
4 H 0.224      
5 H 0.224      
6 H 0.004      
7 H 0.004      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.156 -0.722 0.000 0.738
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.655 -0.204 0.000
y -0.204 -16.173 0.000
z 0.000 0.000 -15.597
Traceless
 xyz
x 2.230 -0.204 0.000
y -0.204 -1.547 0.000
z 0.000 0.000 -0.683
Polar
3z2-r2-1.365
x2-y22.518
xy-0.204
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.644 -0.037 0.000
y -0.037 3.920 0.000
z 0.000 0.000 3.427


<r2> (average value of r2) Å2
<r2> 29.393
(<r2>)1/2 5.422