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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: MP4=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP4=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-187.818273
Energy at 298.15K-187.822215
HF Energy-186.953895
Nuclear repulsion energy101.840015
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 MP4=FULL/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 A 3633 3522 0.00      
2 A 3550 3441 0.00      
3 A 2348 2276 0.00      
4 A 1659 1608 0.00      
5 A 1202 1165 0.00      
6 A 810 785 0.00      
7 A 606 588 0.00      
8 A 390 378 0.00      
9 A 342 332 0.00      
10 A 199 193 0.00      
11 B 3633 3522 0.00      
12 B 3551 3442 0.00      
13 B 1662 1611 0.00      
14 B 1350 1309 0.00      
15 B 1200 1163 0.00      
16 B 657 637 0.00      
17 B 388 376 0.00      
18 B 193 188 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13686.7 cm-1
Scaled (by 0.9693) Zero Point Vibrational Energy (zpe) 13266.5 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 MP4=FULL/aug-cc-pVTZ
ABC
5.12918 0.11915 0.11912

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.010 0.606 0.002
C2 -0.010 -0.606 0.002
N3 -0.010 1.963 -0.058
N4 0.010 -1.963 -0.058
H5 -0.317 2.411 0.791
H6 0.848 2.372 -0.395
H7 0.317 -2.411 0.791
H8 -0.848 -2.372 -0.395

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21191.35902.56991.99721.99503.13353.1244
C21.21192.56991.35903.13353.12441.99721.9950
N31.35902.56993.92681.00821.00844.46804.4286
N42.56991.35903.92684.46804.42861.00821.0084
H51.99723.13351.00824.46801.66384.86354.9565
H61.99503.12441.00844.42861.66384.95655.0383
H73.13351.99724.46801.00824.86354.95651.6638
H83.12441.99504.42861.00844.95655.03831.6638

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 176.931 C1 N3 H5 114.245
C1 N3 H6 114.043 C2 C1 N3 176.931
C2 N4 H7 114.245 C2 N4 H8 114.043
H5 N3 H6 111.180 H7 N4 H8 111.180
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability