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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: QCISD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-148.393932
Energy at 298.15K-148.396175
Nuclear repulsion energy58.797123
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/6-31+G**
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' 3630 3432 38.29      
2 A' 2338 2210 80.20      
3 A' 1687 1595 46.99      
4 A' 1080 1021 7.96      
5 A' 665 629 249.60      
6 A' 451 426 17.15      
7 A" 3739 3534 57.76      
8 A" 1231 1163 0.01      
9 A" 371 351 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 7595.3 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 7180.6 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 QCISD/6-31+G**
ABC
10.14828 0.33197 0.32442

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.221 0.000
N2 -0.005 1.393 0.000
N3 0.084 -1.136 0.000
H4 -0.277 -1.565 0.840
H5 -0.277 -1.565 -0.840

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.17181.35961.99331.9933
N21.17182.53043.08713.0871
N31.35962.53041.01001.0100
H41.99333.08711.01001.6795
H51.99333.08711.01001.6795

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 113.719 C1 N3 H5 113.719
N2 C1 N3 176.694 H4 N3 H5 112.499
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-148.391873
Energy at 298.15K 
HF Energy-147.918162
Nuclear repulsion energy58.994583
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/6-31+G**
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 3716 3513 75.93      
2 A1 2338 2210 123.16      
3 A1 1669 1578 51.23      
4 A1 1121 1060 17.11      
5 B1 472 446 0.04      
6 B1 500i 473i 321.75      
7 B2 3847 3637 102.27      
8 B2 1159 1096 3.16      
9 B2 377 356 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 7099.2 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 6711.6 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 QCISD/6-31+G**
ABC
11.15652 0.33412 0.32440

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.221
N2 0.000 0.000 1.395
N3 0.000 0.000 -1.120
H4 0.000 0.866 -1.626
H5 0.000 -0.866 -1.626

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.17341.34082.03972.0397
N21.17342.51423.14193.1419
N31.34082.51421.00281.0028
H42.03973.14191.00281.7316
H52.03973.14191.00281.7316

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.303 C1 N3 H5 120.303
N2 C1 N3 180.000 H4 N3 H5 119.393
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability