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All results from a given calculation for CH3NHCH3 (Dimethylamine)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-133.785725
Energy at 298.15K-133.793926
HF Energy-133.493036
Nuclear repulsion energy82.881715
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 MP2/3-21G*
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' 3450 3282 1.70      
2 A' 3160 3006 36.90      
3 A' 3113 2962 47.90      
4 A' 2995 2849 119.06      
5 A' 1625 1546 0.37      
6 A' 1598 1520 11.04      
7 A' 1538 1463 0.47      
8 A' 1301 1238 2.32      
9 A' 1223 1163 2.31      
10 A' 940 894 7.31      
11 A' 744 707 127.35      
12 A' 388 369 9.38      
13 A' 267 254 3.62      
14 A" 3159 3005 17.21      
15 A" 3113 2961 21.11      
16 A" 2993 2848 28.16      
17 A" 1618 1539 6.04      
18 A" 1587 1510 9.38      
19 A" 1540 1465 1.99      
20 A" 1511 1437 2.30      
21 A" 1163 1107 21.84      
22 A" 1115 1061 0.69      
23 A" 1052 1000 15.46      
24 A" 260 247 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 20725.9 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 19716.5 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 MP2/3-21G*
ABC
1.11253 0.30136 0.26480

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.026 0.602 0.000
H2 -0.783 1.230 0.000
C3 0.026 -0.232 1.235
C4 0.026 -0.232 -1.235
H5 -0.805 -0.958 1.292
H6 -0.805 -0.958 -1.292
H7 0.966 -0.793 1.272
H8 0.966 -0.793 -1.272
H9 -0.019 0.424 2.109
H10 -0.019 0.424 -2.109

Atom - Atom Distances (Å)
  N1 H2 C3 C4 H5 H6 H7 H8 H9 H10
N11.02441.49071.49072.18902.18902.10862.10862.11742.1174
H21.02442.07842.07842.54092.54092.96122.96122.38402.3840
C31.49072.07842.47091.10482.75751.09472.73561.09413.4090
C41.49072.07842.47092.75751.10482.73561.09473.40901.0941
H52.18902.54091.10482.75752.58331.77853.12001.78793.7544
H62.18902.54092.75751.10482.58333.12001.77853.75441.7879
H72.10862.96121.09472.73561.77853.12002.54381.77553.7262
H82.10862.96122.73561.09473.12001.77852.54383.72621.7755
H92.11742.38401.09413.40901.78793.75441.77553.72624.2190
H102.11742.38403.40901.09413.75441.78793.72621.77554.2190

picture of Dimethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 H5 114.183 N1 C3 H7 108.317
N1 C3 H9 109.048 N1 C4 H6 114.183
N1 C4 H8 108.317 N1 C4 H10 109.048
H2 N1 C3 110.075 H2 N1 C4 110.075
C3 N1 C4 111.947 H5 C3 H7 107.916
H5 C3 H9 108.805 H6 C4 H8 107.916
H6 C4 H10 108.805 H7 C3 H9 108.430
H8 C4 H10 108.430
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability