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All results from a given calculation for NH2CH2CH2COOH (β–alanine)

using model chemistry: CCD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-320.717238
Energy at 298.15K-320.727186
Nuclear repulsion energy244.808655
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 CCD/3-21G
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 3497 3400 1.67      
2 A 3405 3311 0.44      
3 A 3131 3044 6.56      
4 A 3099 3013 17.65      
5 A 3046 2962 6.40      
6 A 3036 2952 195.48      
7 A 3019 2935 587.01      
8 A 1846 1795 260.58      
9 A 1740 1692 29.36      
10 A 1585 1541 19.65      
11 A 1556 1513 232.24      
12 A 1548 1505 7.72      
13 A 1445 1405 10.25      
14 A 1397 1359 3.67      
15 A 1356 1319 3.72      
16 A 1316 1280 15.02      
17 A 1234 1199 117.61      
18 A 1184 1151 21.17      
19 A 1088 1058 132.21      
20 A 1078 1048 26.61      
21 A 1024 995 24.85      
22 A 972 946 3.97      
23 A 925 899 41.10      
24 A 858 835 41.43      
25 A 798 775 10.26      
26 A 700 680 9.73      
27 A 574 558 3.13      
28 A 490 476 10.76      
29 A 416 404 13.53      
30 A 349 339 5.66      
31 A 318 309 10.86      
32 A 211 205 5.01      
33 A 87 85 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 24161.7 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 23492.4 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 CCD/3-21G
ABC
0.23161 0.08318 0.06568

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.913 0.570 0.140
C2 1.340 -0.724 -0.395
C3 0.003 -1.019 0.332
C4 -1.088 0.043 0.031
O5 -0.630 1.332 -0.036
O6 -2.270 -0.245 -0.113
H7 2.661 0.930 -0.463
H8 2.278 0.439 1.090
H9 2.032 -1.573 -0.280
H10 1.151 -0.576 -1.466
H11 -0.402 -1.990 0.024
H12 0.179 -1.049 1.419
H13 0.382 1.337 0.081

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.51392.49293.04902.66094.27011.02501.02642.18742.11543.45352.69621.7141
C21.51391.55052.58152.87013.65292.11812.10741.10101.09772.19312.17862.3229
C32.49291.55051.55162.46192.44193.39052.80702.19082.17891.09551.10192.3996
C43.04902.58151.55161.36881.22593.88333.55063.52702.76302.14552.17361.9584
O52.66092.87012.46191.36882.27653.34273.24373.94752.97573.32962.90521.0185
O64.27013.65292.44191.22592.27655.08134.75444.50553.69362.56002.99893.0943
H71.02502.11813.39053.88333.34275.08131.67292.58732.35704.25903.69032.3783
H81.02642.10742.80703.55063.24374.75441.67292.44722.97283.77052.59432.3282
H92.18741.10102.19083.52703.94754.50552.58732.44721.78272.48752.56823.3650
H102.11541.09772.17892.76302.97573.69362.35702.97281.78272.57483.08132.5779
H113.45352.19311.09552.14553.32962.56004.25903.77052.48752.57481.77973.4182
H122.69622.17861.10192.17362.90522.99893.69032.59432.56823.08131.77972.7433
H131.71412.32292.39961.95841.01853.09432.37832.32823.36502.57793.41822.7433

picture of β–alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 108.875 N1 C2 H9 112.597
N1 C2 H10 107.120 C2 N1 H7 111.630
C2 N1 H8 110.649 C2 C3 C4 112.642
C2 C3 H11 110.782 C2 C3 H12 109.271
C3 C2 H9 110.275 C3 C2 H10 109.543
C3 C4 O5 114.775 C3 C4 O6 122.655
C4 C3 H11 107.026 C4 C3 H12 108.820
C4 O5 H13 109.360 O5 C4 O6 122.560
H7 N1 H8 109.273 H9 C2 H10 108.351
H11 C3 H12 108.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability