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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: BLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/cc-pVTZ
 hartrees
Energy at 0K-151.206444
Energy at 298.15K-151.214339
HF Energy-151.206444
Nuclear repulsion energy82.328668
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 BLYP/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 3364 3354 6.28      
2 A1 2971 2962 38.69      
3 A1 1624 1619 34.03      
4 A1 1450 1446 0.03      
5 A1 1056 1052 30.28      
6 A1 805 803 0.25      
7 A1 439 437 3.36      
8 A2 3444 3433 0.00      
9 A2 1358 1354 0.00      
10 A2 1050 1046 0.00      
11 A2 249 248 0.00      
12 B1 3442 3432 0.87      
13 B1 3005 2996 27.36      
14 B1 1333 1329 0.55      
15 B1 827 824 0.14      
16 B1 385 384 73.93      
17 B2 3364 3354 0.29      
18 B2 1612 1607 1.41      
19 B2 1350 1346 15.19      
20 B2 994 991 40.97      
21 B2 761 759 449.28      

Unscaled Zero Point Vibrational Energy (zpe) 17441.9 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 17389.5 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 BLYP/cc-pVTZ
ABC
1.17553 0.29403 0.26711

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.554
N2 0.000 1.279 -0.183
N3 0.000 -1.279 -0.183
H4 0.883 0.000 1.205
H5 -0.883 0.000 1.205
H6 0.820 1.340 -0.791
H7 -0.820 1.340 -0.791
H8 -0.820 -1.340 -0.791
H9 0.820 -1.340 -0.791

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47631.47631.09701.09702.06792.06792.06792.0679
N21.47632.55802.08392.08391.02221.02222.81072.8107
N31.47632.55802.08392.08392.81072.81071.02221.0222
H41.09702.08392.08391.76652.40462.94592.94592.4046
H51.09702.08392.08391.76652.94592.40462.40462.9459
H62.06791.02222.81072.40462.94591.63953.14152.6798
H72.06791.02222.81072.94592.40461.63952.67983.1415
H82.06792.81071.02222.94592.40463.14152.67981.6395
H92.06792.81071.02222.40462.94592.67983.14151.6395

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.396 C1 N2 H7 110.396
C1 N3 H8 110.396 C1 N3 H9 110.396
N2 C1 N3 120.077 N2 C1 H4 107.231
N2 C1 H5 107.231 N3 C1 H4 107.231
N3 C1 H5 107.231 H4 C1 H5 107.240
H6 N2 H7 106.624 H8 N3 H9 106.624
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.030      
2 N -0.292      
3 N -0.292      
4 H 0.088      
5 H 0.088      
6 H 0.110      
7 H 0.110      
8 H 0.110      
9 H 0.110      


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 -1.730 1.730
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.323 0.000 0.000
y 0.000 -26.012 0.000
z 0.000 0.000 -18.760
Traceless
 xyz
x 5.063 0.000 0.000
y 0.000 -7.970 0.000
z 0.000 0.000 2.908
Polar
3z2-r25.816
x2-y28.689
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.633 0.000 0.000
y 0.000 5.328 0.000
z 0.000 0.000 4.736


<r2> (average value of r2) Å2
<r2> 54.976
(<r2>)1/2 7.415