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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-264.240358
Energy at 298.15K-264.244266
Nuclear repulsion energy179.003385
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 mPW1PW91/6-31+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 Ag 3097 2948 0.00      
2 Ag 2394 2279 0.00      
3 Ag 1476 1405 0.00      
4 Ag 1396 1328 0.00      
5 Ag 1050 999 0.00      
6 Ag 982 935 0.00      
7 Ag 520 495 0.00      
8 Ag 224 213 0.00      
9 Au 3162 3010 0.01      
10 Au 1217 1158 0.01      
11 Au 774 737 3.41      
12 Au 408 388 0.00      
13 Au 81 77 22.94      
14 Bg 3144 2993 0.00      
15 Bg 1322 1259 0.00      
16 Bg 1038 988 0.00      
17 Bg 369 351 0.00      
18 Bu 3106 2956 1.42      
19 Bu 2396 2280 15.64      
20 Bu 1481 1410 18.65      
21 Bu 1297 1234 1.54      
22 Bu 952 906 4.88      
23 Bu 532 506 2.19      
24 Bu 131 125 23.70      

Unscaled Zero Point Vibrational Energy (zpe) 16274.5 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 15490.1 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 mPW1PW91/6-31+G**
ABC
0.85973 0.04943 0.04757

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.770 0.000
C2 0.000 -0.770 0.000
C3 -1.361 1.299 0.000
C4 1.361 -1.299 0.000
N5 2.446 -1.704 0.000
N6 -2.446 1.704 0.000
H7 0.525 1.150 0.881
H8 0.525 1.150 -0.881
H9 -0.525 -1.150 0.881
H10 -0.525 -1.150 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.54071.45952.47623.47882.61771.09341.09342.17702.1770
C21.54072.47621.45952.61773.47882.17702.17701.09341.0934
C31.45952.47623.76164.84781.15832.08632.08632.73322.7332
C42.47621.45953.76161.15834.84782.73322.73322.08632.0863
N53.47882.61774.84781.15835.96113.55103.55103.14743.1474
N62.61773.47881.15834.84785.96113.14743.14743.55103.5510
H71.09342.17702.08632.73323.55103.14741.76182.52823.0815
H81.09342.17702.08632.73323.55103.14741.76183.08152.5282
H92.17701.09342.73322.08633.14743.55102.52823.08151.7618
H102.17701.09342.73322.08633.14743.55103.08152.52821.7618

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.218 C1 C2 H9 110.318
C1 C2 H10 110.318 C1 C3 N6 179.251
C2 C1 C3 111.218 C2 C1 H7 110.318
C2 C1 H8 110.318 C2 C4 N5 179.251
C3 C1 H7 108.768 C3 C1 H8 108.768
C4 C2 H9 108.768 C4 C2 H10 108.768
H7 C1 H8 107.346 H9 C2 H10 107.346
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.057      
2 C -0.057      
3 C 0.035      
4 C 0.035      
5 N -0.450      
6 N -0.450      
7 H 0.236      
8 H 0.236      
9 H 0.236      
10 H 0.236      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -54.356 13.597 0.000
y 13.597 -40.235 0.000
z 0.000 0.000 -33.142
Traceless
 xyz
x -17.668 13.597 0.000
y 13.597 3.514 0.000
z 0.000 0.000 14.153
Polar
3z2-r228.307
x2-y2-14.121
xy13.597
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 210.031
(<r2>)1/2 14.492