return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for NH2CN (cyanamide)

using model chemistry: QCISD(T)/aug-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)/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/aug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-148.560993
Energy at 298.15K 
HF Energy-147.966469
Nuclear repulsion energy59.202345
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)/aug-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 3639 3518        
2 A1 2288 2212        
3 A1 1624 1570        
4 A1 1104 1067        
5 B1 502 485        
6 B1 496i 479i        
7 B2 3764 3639        
8 B2 1130 1092        
9 B2 386 373        

Unscaled Zero Point Vibrational Energy (zpe) 6969.8 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 6738.4 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)/aug-cc-pVTZ
ABC
11.14278 0.33680 0.32692

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

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 1.389
N3 0.000 0.000 -1.115
H4 0.000 0.866 -1.619
H5 0.000 -0.866 -1.619

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16821.33602.03372.0337
N21.16822.50413.13043.1304
N31.33602.50411.00231.0023
H42.03373.13041.00231.7327
H52.03373.13041.00231.7327

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.187 C1 N3 H5 120.187
N2 C1 N3 180.000 H4 N3 H5 119.626
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability