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Microwave spectrum of chloroborane, BH2Cl (1993)

Kawashima, Yoshiyuki ; Takeo, Harutoshi ; Sugie, Masaaki ; [et al.]

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 99 (1993), S. 820-826

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: The microwave spectrum of BH2Cl existing as an intermediate in the reaction between diborane and boron trichloride was observed. The lifetime of this molecule in a brass waveguide cell was found to be less than 1 s. The observed spectrum indicated the molecule to be planar with C2v symmetry. The rotational constants were determined for 11BH2 35Cl, 11BH2 37Cl, 10BH2 35Cl, and 11BD2 35Cl, and were employed to calculate the structure parameters (rs):r(B–H)=1.1916(2) A(ring), r(B–Cl)=1.7353(5) A(ring), and (angle)HBH=124.22(3)°. The quadrupole coupling constants of Cl, an extraordinarily small χzz and a large η compared to related molecules, were obtained. The dipole moment was determined to be μa=0.75 (5) D for BH2Cl.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.465345

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