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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: MP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
1 2 no C2V 1A1

Conformer 1 (Cs)

Jump to S1C2
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-146.205551
Energy at 298.15K-146.207707
Nuclear repulsion energy56.034123
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/STO-3G
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' 3615 3152 4.20      
2 A' 2181 1901 4.86      
3 A' 1848 1611 12.22      
4 A' 1101 960 54.87      
5 A' 896 781 49.21      
6 A' 385 336 13.09      
7 A" 3799 3313 0.07      
8 A" 1382 1205 2.88      
9 A" 379 331 1.39      

Unscaled Zero Point Vibrational Energy (zpe) 7792.9 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 6794.6 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/STO-3G
ABC
8.56596 0.30092 0.29651

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.229 0.000
N2 0.038 1.456 0.000
N3 0.096 -1.213 0.000
H4 -0.469 -1.538 0.834
H5 -0.469 -1.538 -0.834

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22761.44482.00882.0088
N21.22762.66933.14853.1485
N31.44482.66931.05821.0582
H42.00883.14851.05821.6671
H52.00883.14851.05821.6671

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 105.707 C1 N3 H5 105.707
N2 C1 N3 174.412 H4 N3 H5 103.934
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-146.192494
Energy at 298.15K 
HF Energy-145.981862
Nuclear repulsion energy56.987159
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3861 3366 57.82      
2 A1 2406 2098 12.20      
3 A1 1753 1529 21.49      
4 A1 1066 930 17.17      
5 B1 419 366 0.07      
6 B1 777i 677i 345.89      
7 B2 4068 3547 25.20      
8 B2 1195 1042 2.80      
9 B2 401 349 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 7196.1 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 6274.3 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 MP2/STO-3G
ABC
10.62275 0.31115 0.30229

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.225
N2 0.000 0.000 1.447
N3 0.000 0.000 -1.159
H4 0.000 0.887 -1.681
H5 0.000 -0.887 -1.681

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22161.38472.10282.1028
N21.22162.60633.25153.2515
N31.38472.60631.02931.0293
H42.10283.25151.02931.7746
H52.10283.25151.02931.7746

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.457 C1 N3 H5 120.457
N2 C1 N3 180.000 H4 N3 H5 119.086
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability