1,8‐Bis(borylamido)naphthalene Complexes of Lithium and Zinc(II) Including a Zinc(II) Isocyanide Adduct

Abstract

The zinc coordination chemistry of a useful metal ion chelator, bis(borylamido)naphthalene ligand [1,8-C 10 H 6 -(NBNL) 2 ] 2-, which has two borylamido groups on a rigid naphthalene backbone, is presented. Deprotonation of N 1 ,N 8di(9-bora-bicyclo[3.3.1]nonan-9-yl)naphthalene-1,8-diamine, [1,8-C 10 H 6 (NBNL) 2 ]H 2 (3) with two equivalents of nBuLi in Et 2 O afforded the lithium derivative, Li 2 (Et 2 O) 2 [1,8-C 10 H 6 (NBNL) 2 ] (4). Metathesis reaction of Li 2 (Et 2 O) 2 [1,8-C 10 H 6 (NBNL) 2 ] with (tBu 2 bipy)ZnCl 2 (tBu 2 bipy = 4,4′-di-tert-butyl-2,2′-bipyridine) in a 1:1 molar ratio gave [1,8-C 10 H 6 (NBNL) 2 ]Zn(tBu 2 bipy) (5), which features an all-nitrogen coordination sphere at zinc. The reac- [a]

Coordination Chemistry of Main Group Metals with Organic Isocyanides

“…Dias and co-workers have reported the coordination chemistry of interesting dianionic chelator bis(borylamido)naphthalene [1,8-C 10 H 6 (NBNL) 2 ] 2À (BNL = 9-borabicyclo[3.3.1]nonan-9-yl) ligand coordinated zinc with isocyanides molecules. [30] Deprotonation of bis(borylamido)naphthalene with 2.0 equiv. of nBuLi in the presence of Et The IR spectral analysis shows the presence of the zinc coordinated NC bond, which shows two stretching bands at 2203 cm À 1 and 2178 cm À 1 ; consider shifting to a higher frequency to the NC bond (2117 cm À 1 ) in free XylNC.…”

“…Dias and co‐workers have reported the coordination chemistry of interesting dianionic chelator bis(borylamido)naphthalene [1,8‐C 10 H 6 (NBNL) 2 ] 2− (BNL=9‐bora‐bicyclo[3.3.1]nonan‐9‐yl) ligand coordinated zinc with isocyanides molecules [30] . Deprotonation of bis(borylamido)naphthalene with 2.0 equiv.…”