Synthesis and Structure of [Cr{(η6-C6H5)2B{NtBu(SiMe3)}}] and [Cr{(η6-C6H5)2(BNMe2)2}], the First Boron-Bridged Metalloarenophanes
摘要:
Reaction of [Cr(eta(6)-C6H5Li)(2)].tmen with (RR')-NBCl2 (R = R' = SiMe3; R = R' = iPr; R = SiMe3, R' = tBu) and B2Br2(NMe2)(2), respectively, in hexane yielded the strained [1]borachromoarenophanes [Cr{(eta(6)- C6H5)(2)-BNRR'}] (4a-c; R = R' = SiMe3; R = R' = iPr; R = SiMe3, R' = tBu) and [2]borachromoarenophanes [Cr-{(eta(6)- C6H5)(2)(BNMe2)(2)}] (5), respectively, in moderate yields as dark red solids; compounds 4c and 5 were structurally characterized. 4c exhibits the largest arenearene tilt angle (26.6(3)degrees) reported for any [n]metal-loarenophane.
Synthesis and Structure of [Cr{(η6-C6H5)2B{NtBu(SiMe3)}}] and [Cr{(η6-C6H5)2(BNMe2)2}], the First Boron-Bridged Metalloarenophanes
摘要:
Reaction of [Cr(eta(6)-C6H5Li)(2)].tmen with (RR')-NBCl2 (R = R' = SiMe3; R = R' = iPr; R = SiMe3, R' = tBu) and B2Br2(NMe2)(2), respectively, in hexane yielded the strained [1]borachromoarenophanes [Cr{(eta(6)- C6H5)(2)-BNRR'}] (4a-c; R = R' = SiMe3; R = R' = iPr; R = SiMe3, R' = tBu) and [2]borachromoarenophanes [Cr-{(eta(6)- C6H5)(2)(BNMe2)(2)}] (5), respectively, in moderate yields as dark red solids; compounds 4c and 5 were structurally characterized. 4c exhibits the largest arenearene tilt angle (26.6(3)degrees) reported for any [n]metal-loarenophane.
Synthesis and Structure of [Cr{(η<sup>6</sup>-C<sub>6</sub>H<sub>5</sub>)<sub>2</sub>B{N<i>t</i>Bu(SiMe<sub>3</sub>)}}] and [Cr{(η<sup>6</sup>-C<sub>6</sub>H<sub>5</sub>)<sub>2</sub>(BNMe<sub>2</sub>)<sub>2</sub>}], the First Boron-Bridged Metalloarenophanes
Reaction of [Cr(eta(6)-C6H5Li)(2)].tmen with (RR')-NBCl2 (R = R' = SiMe3; R = R' = iPr; R = SiMe3, R' = tBu) and B2Br2(NMe2)(2), respectively, in hexane yielded the strained [1]borachromoarenophanes [Cr(eta(6)- C6H5)(2)-BNRR'}] (4a-c; R = R' = SiMe3; R = R' = iPr; R = SiMe3, R' = tBu) and [2]borachromoarenophanes [Cr-(eta(6)- C6H5)(2)(BNMe2)(2)}] (5), respectively, in moderate yields as dark red solids; compounds 4c and 5 were structurally characterized. 4c exhibits the largest arenearene tilt angle (26.6(3)degrees) reported for any [n]metal-loarenophane.