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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: QCISD(T)/6-31G*

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 QCISD(T)/6-31G*
 hartrees
Energy at 0K-148.380939
Energy at 298.15K-148.383188
Nuclear repulsion energy58.552616
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 QCISD(T)/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' 3528 3385        
2 A' 2303 2210        
3 A' 1685 1616        
4 A' 1066 1023        
5 A' 704 675        
6 A' 444 426        
7 A" 3627 3480        
8 A" 1233 1183        
9 A" 375 360        

Unscaled Zero Point Vibrational Energy (zpe) 7482.9 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 7178.3 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 QCISD(T)/6-31G*
ABC
9.89121 0.32958 0.32240

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.221 0.000
N2 -0.027 1.398 0.000
N3 0.107 -1.140 0.000
H4 -0.280 -1.565 0.840
H5 -0.280 -1.565 -0.840

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.17731.36451.99271.9927
N21.17732.54083.08943.0894
N31.36452.54081.01771.0177
H41.99273.08941.01771.6797
H51.99273.08941.01771.6797

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 112.740 C1 N3 H5 112.740
N2 C1 N3 176.820 H4 N3 H5 111.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-148.378252
Energy at 298.15K 
HF Energy-147.902319
Nuclear repulsion energy58.801107
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 QCISD(T)/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 A1 3639 3491        
2 A1 2307 2213        
3 A1 1654 1587        
4 A1 1117 1071        
5 B1 480 460        
6 B1 524i 503i        
7 B2 3760 3607        
8 B2 1149 1103        
9 B2 380 365        

Unscaled Zero Point Vibrational Energy (zpe) 6981.3 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 6697.1 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 QCISD(T)/6-31G*
ABC
11.05237 0.33232 0.32262

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.220
N2 0.000 0.000 1.399
N3 0.000 0.000 -1.121
H4 0.000 0.870 -1.633
H5 0.000 -0.870 -1.633

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.17941.34122.04652.0465
N21.17942.52063.15413.1541
N31.34122.52061.00901.0090
H42.04653.15411.00901.7398
H52.04653.15411.00901.7398

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.441 C1 N3 H5 120.441
N2 C1 N3 180.000 H4 N3 H5 119.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability