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All results from a given calculation for HCONHCH3 (N-methylformamide)

using model chemistry: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS cis 1A'
1 3 yes C1 cis 1A'

Conformer 1 (CS cis)

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Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-208.616968
Energy at 298.15K-208.622948
HF Energy-207.968533
Nuclear repulsion energy119.253494
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 CCD/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' 3731 3498 34.51      
2 A' 3217 3016 19.86      
3 A' 3114 2920 51.53      
4 A' 3057 2867 76.81      
5 A' 1883 1765 479.26      
6 A' 1594 1495 14.32      
7 A' 1547 1450 24.78      
8 A' 1528 1433 9.59      
9 A' 1454 1363 12.45      
10 A' 1343 1259 130.05      
11 A' 1210 1134 31.92      
12 A' 1045 980 44.40      
13 A' 625 586 14.82      
14 A' 353 331 8.55      
15 A" 3185 2986 33.63      
16 A" 1544 1448 3.85      
17 A" 1188 1114 1.52      
18 A" 1074 1007 0.00      
19 A" 600 563 146.94      
20 A" 192 180 1.54      
21 A" 56 52 2.24      

Unscaled Zero Point Vibrational Energy (zpe) 16769.8 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 15723.3 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 CCD/6-31G**
ABC
1.49533 0.14575 0.13621

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.282 -0.758 0.000
O2 1.403 -1.231 0.000
N3 0.000 0.572 0.000
C4 -1.335 1.132 0.000
H5 -0.627 -1.380 0.000
H6 0.797 1.186 0.000
H7 -2.055 0.316 0.000
H8 -1.513 1.741 0.887
H9 -1.513 1.741 -0.887

Atom - Atom Distances (Å)
  C1 O2 N3 C4 H5 H6 H7 H8 H9
C11.21671.35962.48751.10172.01152.57243.20243.2024
O21.21672.28463.61672.03612.49193.78874.25724.2572
N31.35962.28461.44762.05001.00662.07112.10762.1076
C42.48753.61671.44762.60952.13291.08861.09051.0905
H51.10172.03612.05002.60952.93502.21683.36323.3632
H62.01152.49191.00662.13292.93502.98242.53592.5359
H72.57243.78872.07111.08862.21682.98241.76431.7643
H83.20244.25722.10761.09053.36322.53591.76431.7736
H93.20244.25722.10761.09053.36322.53591.76431.7736

picture of N-methylformamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 C4 124.745 C1 N3 H6 115.634
O2 C1 N3 124.844 O2 C1 H5 122.787
N3 C1 H5 112.369 N3 C4 H7 108.671
N3 C4 H8 111.503 N3 C4 H9 111.503
C4 N3 H6 119.621 H7 C4 H8 108.118
H7 C4 H9 108.118 H8 C4 H9 108.812
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 ()

Jump to S1C1 S1C3
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-208.616968
Energy at 298.15K-208.622948
HF Energy-207.968533
Nuclear repulsion energy119.253494
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 CCD/6-31G**
Rotational Constants (cm-1) from geometry optimized at CCD/6-31G**
ABC
1.49533 0.14575 0.13621

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

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C1 cis)

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