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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: mPW1PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-148.752974
Energy at 298.15K-148.755387
HF Energy-148.752974
Nuclear repulsion energy59.982798
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/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 A 3602 3452 28.64      
2 A 1302 1248 0.06      
3 A 949 909 7.89      
4 A 751 720 89.50      
5 A 530 508 0.10      
6 B 3602 3451 107.05      
7 B 2267 2173 568.30      
8 B 946 906 387.40      
9 B 534 511 70.60      

Unscaled Zero Point Vibrational Energy (zpe) 7241.6 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 6939.6 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 mPW1PW91/cc-pVDZ
ABC
11.73322 0.34587 0.34585

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.016
N2 0.000 1.223 -0.082
N3 0.000 -1.223 -0.082
H4 0.640 1.733 0.524
H5 -0.640 -1.733 0.524

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22651.22651.91581.9158
N21.22652.44531.01813.0839
N31.22652.44533.08391.0181
H41.91581.01813.08393.6943
H51.91583.08391.01813.6943

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.889 C1 N3 H5 116.889
N2 C1 N3 170.908
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.178      
2 N -0.233      
3 N -0.233      
4 H 0.144      
5 H 0.144      


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 2.079 2.079
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.307 4.000 0.000
y 4.000 -16.140 0.000
z 0.000 0.000 -16.836
Traceless
 xyz
x 0.181 4.000 0.000
y 4.000 0.431 0.000
z 0.000 0.000 -0.612
Polar
3z2-r2-1.224
x2-y2-0.167
xy4.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.944 0.401 0.000
y 0.401 5.748 0.000
z 0.000 0.000 1.908


<r2> (average value of r2) Å2
<r2> 38.656
(<r2>)1/2 6.217