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: mPW1PW91/aug-cc-pVDZ

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 mPW1PW91/aug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/aug-cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-148.765786
Energy at 298.15K 
HF Energy-148.765786
Nuclear repulsion energy59.414296
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 mPW1PW91/aug-cc-pVDZ
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 3645 3493 66.95      
2 A1 2380 2280 151.93      
3 A1 1613 1545 46.13      
4 A1 1145 1097 12.37      
5 B1 530 508 0.08      
6 B1 390i 374i 237.31      
7 B2 3772 3615 95.51      
8 B2 1132 1085 1.42      
9 B2 407 390 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 7115.5 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 6818.8 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 mPW1PW91/aug-cc-pVDZ
ABC
11.11994 0.33991 0.32983

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

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 1.383
N3 0.000 0.000 -1.109
H4 0.000 0.867 -1.617
H5 0.000 -0.867 -1.617

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16441.32732.03032.0303
N21.16442.49163.12303.1230
N31.32732.49161.00531.0053
H42.03033.12301.00531.7345
H52.03033.12301.00531.7345

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.387 C1 N3 H5 120.387
N2 C1 N3 180.000 H4 N3 H5 119.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.166      
2 N -0.272      
3 N 0.106      
4 H -0.000      
5 H -0.000      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -4.850 4.850
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.923 0.000 0.000
y 0.000 -14.953 0.000
z 0.000 0.000 -18.101
Traceless
 xyz
x -2.396 0.000 0.000
y 0.000 3.559 0.000
z 0.000 0.000 -1.163
Polar
3z2-r2-2.325
x2-y2-3.970
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.992 0.000 0.000
y 0.000 3.084 0.000
z 0.000 0.000 5.737


<r2> (average value of r2) Å2
<r2> 39.835
(<r2>)1/2 6.311