Research Article

Hydroboration of Substituted Cyclopropane: A Density Functional Theory Study

Table 1

(a) B3LYP/6-31G** optimized structural parameters (units in Å for bond length) for the –F substituted cyclopropanes, intermediate complexes (LM-CX), “loose” transition structures (TS), and products (LM) along the plane of cyclopropane ring. (b) B3LYP/6-31G** optimized structural parameters (units in Å for bond length and in degree for angle) for the “tight” transition structures (TS) and products (LM) along the plane of cyclopropane ring.
(a)

C1–C3C1–B1C3–B1B1–H8

C3H5F1.493
LM-CX11.5063.0942.9221.190
TS11.9121.9911.8291.209
LM12.5293.2631.5592.955
C3H5Cl1.498
LM-CX21.5053.3503.1411.190
TS21.8931.8831.9291.206
LM22.4981.5653.4173.166
C3H5CN1.522
LM-CX31.5283.3253.2091.190
TS31.9581.8631.9891.206
LM32.5461.5903.2312.914
C3H5NC1.512
LM-CX41.5193.3093.1271.190
TS41.9471.9261.9101.207
LM42.5321.5923.2732.970
C3H5CH31.509
LM-CX51.5223.1662.8941.191
TS52.0121.7672.0421.215
LM52.5803.3031.5582.960
C3H4(CH3)21.511
LM-CX61.5193.4932.9421.192
TS62.0402.2161.7641.216
LM62.5913.3041.5582.915

(b)

C1–C3C1–B1C3–B1B1–H8

C3H5F
 TS72.2511.6201.7591.264
 LM72.5151.5723.4303.186
C3H5Cl
 TS82.2931.8091.6091.266
 LM82.5223.2471.5602.954
C3H5CN
 TS92.3101.8411.6051.276
 LM92.5463.2611.5612.930
C3H5NC
 TS102.3091.8371.6061.267
 LM102.5353.2571.5612.929
C3H5CH3
 TS112.2781.7611.6221.266
 LM112.5791.5583.2722.971
C3H4(CH3)2
 TS122.0402.2161.7641.216
 LM122.5911.5663.2112.894