return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: QCISD(T)=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 1A1

Conformer 1 (Cs)

Jump to S1C2
Vibrational Frequencies calculated at QCISD(T)=FULL/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-148.593226
Energy at 298.15K 
HF Energy-147.964876
Nuclear repulsion energy59.418239
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)=FULL/cc-pVTZ
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 3672 3513        
2 A1 2319 2219        
3 A1 1644 1573        
4 A1 1119 1071        
5 B1 517 495        
6 B1 479i 458i        
7 B2 3790 3627        
8 B2 1140 1091        
9 B2 389 373        

Unscaled Zero Point Vibrational Energy (zpe) 7055.1 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 6751.0 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)=FULL/cc-pVTZ
ABC
11.22153 0.33933 0.32937

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.219
N2 0.000 0.000 1.384
N3 0.000 0.000 -1.111
H4 0.000 0.863 -1.614
H5 0.000 -0.863 -1.614

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16441.33032.02632.0263
N21.16442.49473.11943.1194
N31.33032.49470.99910.9991
H42.02633.11940.99911.7266
H52.02633.11940.99911.7266

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.222 C1 N3 H5 120.222
N2 C1 N3 180.000 H4 N3 H5 119.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability