CO substitution in H4Ru4(CO)12 by the diphosphine ligands 1,2-bis(diphenylphosphino)benzene (dppbz) and 1,8-bis(diphenylphosphino)naphthalene (dppn): X-ray diffraction structures of the diphosphine-chelated clusters 1,1-H4Ru4(CO)10(dppbz) and 1,1-H4Ru4(CO)10(dppn)

Reactions of rhenium and manganese carbonyl complexes with 1,8-bis(diphenylphosphino)naphthalene: Ligand chelation, C–H and C–P bond-cleavage reactions

“…Late transition metal systems with chelating diphosphine ligands such as 1,8-bis(diphenylphosphino)naphthalene with a rigid C 3 -backbone [7,8] have been reported to be active catalysts in CO/ethylene co-polymerization [9]. The reactivity of this ligand with polynuclear transition metal carbonyl compounds have been recently investigated by the Bruce [10][11][12] and Richmond [13,14] 12 ] and 1,8-bis(diphenylphosphino)naphthalene at elevated temperatures [10]. These compounds were formed by the aryl C-H and C-P bond-cleavage reactions of the ligand.…”

“…However, it is interesting to note that a cluster containing an unaltered dppn ligand was not detected in any of the above reactions. Very recently, Richmond et al have investigated the reactions of 1,8-bis(diphenylphosphino)naphthalene with the hydride-bridged ruthenium cluster [Ru 4 (l-H) 4 (CO) 12 ] and the cobalt cluster [PhCCo 3 (CO) 9 ] and obtained products containing both unaltered and activated dppn ligands [13,14]. For instance, the ruthenium cluster afforded [Ru 3 (l-H) 4 (CO) 10 (j 2 -dppn)] as the sole isolable product [13]; whereas the cobalt cluster yielded [PhCCo 3 (CO) 8 2 ] and the results are described in the present paper.…”

Crystal structure of [1,2-bis(diphenylphosphanyl)benzene]heptacarbonyldi-μ-hydrido-(μ3-2,4,6-trimethylphenylphosphinidene)-triangulo-triruthenium

“…The crystal structures of similar coordination modes of BDP in which two phosphorus atoms connect to one Ru atom in the polynuclear clusters have been observed, i.e., HRu 6 ( 5 -C)( 3 -P)(CO) 14 (BDP) (Watson et al, 2007), 1,1-H 4 Ru 4 (CO) 10 (BDP) (Nesterov et al, 2007), and the cationic trinuclear ruthenium complex [Ru 3 ( 2 -Cl) 3 ( 3 -Cl) 2 (BDP) 3 ]PF 6 (Mashima et al, 1997). Mononuclear ruthenium complexes with BDP have also been reported, i.e., Ru(CO) 3 (BDP) (Bunten et al, 2000), [CpRu(PPh 3 )(BDP)]Cl (Guan et al, 2003), CpRu(BDP)H (Guan et al, 2003), [RuCl(BDP)(cis-1,3,5-triaminocyclohexane)]Cl (Gamble et al, 2013), [Ru(2,2 0 :6 0 ,2 00 -terpyridine)(BDP)(CH 3 CN)](PF 6 ) 2 (Nakamura et al, 2014), [Ru(2,2 0 :6 0 ,2 00 -terpyridine))(BDP)(NO 2 )](PF 6 ) (Nakamura et al, 2015) and Cp*Ru(BDP)(PPh 2 ) (Sues et al, 2014).…”

Synthesis of ligands based on naphthalene peri-substituted by Group 15 and 16 elements and their coordination chemistry

“…The hydrido cluster 31 reacts with dppn (1f) under thermal and Me 3 NO activation to give a chelate product 32 via a CO substitution mechanism (Scheme 14) [30].…”