Synthesis, structure, and reactivity of pincer-type iridium complexes having gallyl- and indyl-metalloligands utilizing 2,5-bis(6-phosphino-2-pyridyl)pyrrolide as a new scaffold for metal–metal bonds

Abstract

The synthesis and structural analyses of pincer-type iridium complexes having gallyl- and indyl-metalloligands were achieved utilizing 2,5-bis(6-phosphino-2-pyridyl)pyrrolide as a new scaffold for metal–metal bonds.

Catalysis using transition metal complexes featuring main group metal and metalloid compounds as supporting ligands

“…We have developed an efficient method for the synthesis of a variety of M–E complexes (E = Al, Ga, and In) by utilizing a 6,6′′-bis(phosphino)terpyridine derivative 50 as a scaffold for the M–E bond. 59 The terpyridine-based rigid and planar N 3 P 2 -structure efficiently stabilizes the M–E bond by keeping sufficient coordination space and reactivity at the M center. The cationic [terpyridine–ECl 2 ] + complexes 51 act as highly electrophilic Z-type ligands, and complexation with Pd 0 affords a series of Pd–E complexes 52 ( Scheme 20 ).…”

Phosphorus or nitrogen – the first phosphatriptycene in coordination polymer chemistry

“…That this combination can display selectivity has been demonstrated numerous times in discrete bimetallic complexes. [41][42][43][44] There are even quite a few examples of P,N heteroditopic ligands that form coordination polymers, however, all of these were monometallic CPs. [45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64] With our ligand design we want to adhere as closely as possible to the key principals mentioned above which is straightforward for the N donor by choosing a pyridine moiety.…”

“…That this combination can display selectivity has been demonstrated numerous times in discrete bimetallic complexes. 41–44 There are even quite a few examples of P,N heteroditopic ligands that form coordination polymers, however, all of these were monometallic CPs. 45–64…”

Coordination Flexibility of the Rh(PXP) Complex to NH3, CO, and C2H4 (PXP = Diphosphine-Based Pincer Ligand; X = B, Al, and Ga): Theoretical Insight

“…They applied its palladium complex to hydrosilylation of carbon dioxide . This group also synthesized similar Ga- and In-based pincer-type ligands and those metal complexes very recently. ,, Nakao and co-workers reported recently X-type diphosphino-aluminyl pincer ligand Al­{[N­(C 6 H 4 )] 2 NMe}­[CH 2 P­( i Pr) 2 ] 2 , which is named PAlP hereinafter. Its rhodium complex Rh­(PAlP) 1 (Scheme d) has been successfully applied to catalytic monoalkylation of pyridine with alkenes through C(2)–H σ-bond activation to afford linear and branch alkylated pyridine derivatives with high C(2)-regioselectivity .…”