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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-65.238648
Energy at 298.15K-65.242554
HF Energy-65.077674
Nuclear repulsion energy31.466750
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 CID/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' 3096 2884 13.33      
2 A' 3007 2801 4.02      
3 A' 2609 2431 82.72      
4 A' 1570 1463 3.71      
5 A' 1437 1339 48.47      
6 A' 1291 1203 47.83      
7 A' 1128 1051 88.72      
8 A' 965 899 13.38      
9 A' 668 622 0.26      
10 A" 3138 2924 18.02      
11 A" 2681 2498 131.55      
12 A" 1543 1438 4.89      
13 A" 1119 1043 24.25      
14 A" 720 670 0.54      
15 A" 84 78 1.72      

Unscaled Zero Point Vibrational Energy (zpe) 12527.6 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 11670.7 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 CID/3-21G
ABC
3.17272 0.69565 0.63771

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.696 0.000
B2 -0.012 0.888 0.000
H3 1.047 -1.018 0.000
H4 -0.471 -1.132 0.896
H5 -0.471 -1.132 -0.896
H6 0.014 1.510 -1.031
H7 0.014 1.510 1.031

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.58451.10721.09651.09652.43532.4353
B21.58452.18082.25672.25671.20391.2039
H31.10722.18081.76661.76662.91892.9189
H41.09652.25671.76661.79123.30522.6894
H51.09652.25671.76661.79122.68943.3052
H62.43531.20392.91893.30522.68942.0611
H72.43531.20392.91892.68943.30522.0611

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.102 C1 B2 H7 121.102
B2 C1 H3 106.886 B2 C1 H4 113.394
B2 C1 H5 113.394 H3 C1 H4 106.572
H3 C1 H5 106.572 H4 C1 H5 109.525
H6 B2 H7 117.734
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability