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All results from a given calculation for CH3CH(NH2)COOH (Alanine)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-322.381291
Energy at 298.15K-322.390586
HF Energy-321.763980
Nuclear repulsion energy244.302530
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 MP2/LANL2DZ
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 3636 3502 9.54      
2 A 3517 3388 1.84      
3 A 3344 3220 215.45      
4 A 3152 3036 12.75      
5 A 3130 3014 33.77      
6 A 3071 2958 16.90      
7 A 3027 2915 22.24      
8 A 1715 1652 43.03      
9 A 1685 1623 206.25      
10 A 1541 1484 11.57      
11 A 1535 1478 4.86      
12 A 1456 1402 10.12      
13 A 1382 1331 22.71      
14 A 1354 1304 19.24      
15 A 1329 1280 350.78      
16 A 1288 1240 5.46      
17 A 1186 1143 19.93      
18 A 1117 1076 17.05      
19 A 1057 1018 50.51      
20 A 1026 988 2.39      
21 A 950 915 118.24      
22 A 893 860 149.45      
23 A 841 810 120.42      
24 A 768 740 2.30      
25 A 693 667 14.12      
26 A 603 581 8.15      
27 A 510 491 1.68      
28 A 384 370 0.73      
29 A 336 323 12.06      
30 A 282 271 17.45      
31 A 258 249 4.36      
32 A 233 224 1.87      
33 A 51 49 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 23673.8 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 22800.2 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 MP2/LANL2DZ
ABC
0.15657 0.10362 0.07289

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.299 -1.149 -0.258
C2 1.280 1.263 0.488
C3 0.633 0.190 -0.443
C4 -0.885 0.052 -0.093
O5 -1.202 -1.144 0.558
O6 -1.735 0.938 -0.343
H7 2.196 -1.095 0.231
H8 1.391 -1.688 -1.123
H9 0.725 2.212 0.410
H10 1.251 0.924 1.540
H11 0.693 0.540 -1.490
H12 2.330 1.439 0.196
H13 -0.353 -1.677 0.602

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52401.50682.49842.63123.68381.02291.02393.47362.74392.17702.82181.9359
C22.52401.56052.54823.45793.14452.54233.36401.10211.10532.18651.10443.3644
C31.50681.56051.56472.47972.48562.13282.13672.19562.20231.10602.20142.3556
C42.49842.54821.56471.39711.25313.30413.04472.74062.82642.16393.51411.9374
O52.63123.45792.47971.39712.33013.41473.13753.87223.35503.25874.39081.0039
O63.68383.14452.48561.25312.33014.46314.15652.87063.52992.71434.13143.1051
H71.02292.54232.13283.30413.41474.46311.68373.62342.58522.81022.53732.6410
H81.02393.36402.13673.04473.13754.15651.68374.24283.73292.36403.52142.4524
H93.47361.10212.19562.74063.87222.87063.62344.24281.79212.53051.79454.0395
H102.74391.10532.20232.82643.35503.52992.58523.73291.79213.10481.79963.1960
H112.17702.18651.10602.16393.25872.71432.81022.36402.53053.10482.51613.2224
H122.82181.10442.20143.51414.39084.13142.53733.52141.79451.79962.51614.1317
H131.93593.36442.35561.93741.00393.10512.64102.45244.03953.19603.22244.1317

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 110.737 N1 C3 C4 108.845
N1 C3 H11 111.943 C2 C3 C4 109.252
C2 C3 H11 108.979 C3 N1 H7 113.558
C3 N1 H8 113.831 C3 C2 H9 109.902
C3 C2 H10 110.240 C3 C2 H12 110.222
C3 C4 O5 113.575 C3 C4 O6 123.412
C4 C3 H11 106.983 C4 O5 H13 106.439
O5 C4 O6 122.995 H7 N1 H8 110.695
H9 C2 H10 108.556 H9 C2 H12 108.830
H10 C2 H12 109.053
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability