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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-65.902968
Energy at 298.15K-65.906872
HF Energy-65.902968
Nuclear repulsion energy31.720096
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 B3PW91/6-31G
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 2967 16.30      
2 A' 2999 2872 2.80      
3 A' 2582 2473 111.10      
4 A' 1517 1453 5.38      
5 A' 1384 1326 73.79      
6 A' 1265 1212 31.75      
7 A' 1100 1054 78.44      
8 A' 987 945 12.30      
9 A' 625 599 0.49      
10 A" 3150 3017 19.88      
11 A" 2657 2545 169.09      
12 A" 1482 1419 7.21      
13 A" 1088 1042 25.30      
14 A" 704 674 0.18      
15 A" 108 104 2.92      

Unscaled Zero Point Vibrational Energy (zpe) 12373.8 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 11850.4 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 B3PW91/6-31G
ABC
3.19160 0.71389 0.65278

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 -0.685 0.000
B2 -0.015 0.874 0.000
H3 1.050 -0.988 0.000
H4 -0.457 -1.134 0.896
H5 -0.457 -1.134 -0.896
H6 0.012 1.495 -1.027
H7 0.012 1.495 1.027

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55901.10721.09561.09562.41002.4100
B21.55902.14562.24322.24321.20061.2006
H31.10722.14561.75911.75912.88112.8811
H41.09562.24321.75911.79253.29122.6739
H51.09562.24321.75911.79252.67393.2912
H62.41001.20062.88113.29122.67392.0545
H72.41001.20062.88112.67393.29122.0545

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.141 C1 B2 H7 121.141
B2 C1 H3 105.920 B2 C1 H4 114.207
B2 C1 H5 114.207 H3 C1 H4 105.987
H3 C1 H5 105.987 H4 C1 H5 109.776
H6 B2 H7 117.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.684      
2 B 0.236      
3 H 0.182      
4 H 0.175      
5 H 0.175      
6 H -0.042      
7 H -0.042      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.153 -0.729 0.000 0.745
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.435 -0.193 0.000
y -0.193 -16.018 0.000
z 0.000 0.000 -15.418
Traceless
 xyz
x 2.283 -0.193 0.000
y -0.193 -1.592 0.000
z 0.000 0.000 -0.692
Polar
3z2-r2-1.383
x2-y22.583
xy-0.193
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.677 -0.025 0.000
y -0.025 4.124 0.000
z 0.000 0.000 3.670


<r2> (average value of r2) Å2
<r2> 29.236
(<r2>)1/2 5.407