Structure Data of Free Polyatomic Molecules
934
ED
C16H36B4
ra
B–B
B–C
C–C
C–H
Tetrakis(1,1-dimethylethyl)tetraborane(4)
Tetra-t-butyltetraborane(4)
a
Å )
1.704(4)
1.580(6)
1.550(2)
1.101(1)
θa
B–C–C
C–C–H
τ1(methyl) b)
τ2(t-butyl) c)
deg )
111.7(2)
109.7(4)
42.4(8)
30.0(3)
) Estimated standard errors.
) B(1)–C(1)–C(11)–H torsional angle from
the syn position, positive value for the clockwise
rotation of the C(11)–H bond around the
C(1)–C(11) bond, viewed from C(1) to C(11).
c
) B(2)–B(1)–C(1)–C(12) torsional angle from
the syn position, positive value for the
clockwise rotation of the C(1)–C(12) bond
around the B(1)–C(1) bond, viewed from
B(1) to C(1).
b
Hnyk, D.: Polyhedron 16 (1997) 603.
Landolt-Börnstein
New Series II/28D
H3C
a
The nozzle temperature was 346 K.
a
T
CH3
CH3
B
H3C
H3C
B
CH3
H3C
B
B
CH3
CH3
CH3
CH3
CH3