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Frustrated Lewis Pair based on a peri ‐Substituted Biphenylene Scaffold
Author(s) -
Kutter Felix,
Lork Enno,
Beckmann Jens
Publication year - 2018
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201800160
Subject(s) - biphenylene , frustrated lewis pair , heteronuclear molecule , lewis acids and bases , diphenylphosphine , borane , chemistry , metathesis , salt (chemistry) , boranes , medicinal chemistry , crystallography , nuclear magnetic resonance spectroscopy , stereochemistry , organic chemistry , catalysis , boron , polymerization , phenylene , phosphine , polymer
Starting from 1,8‐dibromo‐biphenylene, [1‐(bromo)biphenylen‐8‐yl]diphenylphosphine ( 1 ) and [1‐(diphenylphosphanyl)biphenylen‐8‐yl]dimesitylborane ( 2 ) were prepared by sequential metal / halide exchange and salt metathesis reactions. The phosphinoborane 2 comprises a frustrated Lewis pair (FLP) mounted on a peri ‐substituted biphenylene scaffold with a P ··· B distance of 4.100(3) Å. Attempts to capture dihydrogen and carbon dioxide failed, presumably due to the insufficient Lewis acidity of the dimesityl borane group. Compounds 1 and 2 were characterized by heteronuclear NMR spectroscopy and X‐ray crystallography.