Phenylene-bridged bis

Dentritic phenylene-bridged Bi bismuthanes were obtained from Ph2BiCl and />-Li2C6H4 and related reagents.144... 

We selected two types of molecular wires to form desired structures for the electrode. The first has a linear structure with a bis-terpyridine moiety (Lp azobenzene-bridged bis-terpyridine ligand, L2 phenylene-bridged bis-terpyridine ligand), as illustrated in Figure 2. This type of wire can form a linear structure such as a bead curtain. The second has a triangular structure with three terpyridine... 

Oakley and co-workers have synthesized the related 1,4-phenylene-bridged bis-lA ,2,4,6,3 i -thia(selena)triazaphosphinines and studied the spin distribution in the diradicals (262) <92IC442>. The closed shell quinoidal ground state (263) evidently does not prevail. 

Synthesis of 1,4-phenylene bridged bis-heterocyclic compounds 12ARK(1) 1. Synthesis of small and medium size monocycHc hydroxamic acids 12KGS699. 

Figure lb reports the UV-Visible spectrum of the liquid 1,4-bis(triethoxysilyl)benzene, the precursor of the phenylene-bridged PMO, into which traces of iodine have been dissolved. Only one band due to iodine is visible at 362 nm. We suggest this band to be due to I3" ion, which in aqueous solution absorbs at 355 nm [8], The presence of a band at the same wavelength in the case of I2 adsorbed onto AW-Ph-HMM reveals, also in... 

With the alkynyl functionality greater than two, starbust type complexes are obtained, as derived, for example, from 1,3,5-trialkynylbenzenes 85 or -triazines,86 1,1,2,2-tetraalkynylethenes,85 or bis(l,2-dialkynyl)phenylene-bridged crown ethers or calixarenes. ... 

When phenylene- and ethylene-bridged bis(oxazolones) are used as ligands, dinuclear palladium(II) and platinum(ll) 333, 334, and 335 complexes are obtained (Fig. 7.35)." ° In some cases, the close proximity of the ortho phenyl-H-atom to the metal rendered these complexes suitable precursors for ortho metalation. 

Figure 7.35. Dinuclear palladium(II) and platinum(ll) complexes with phenylene- and ethylene-bridged bis(oxazolone) ligands.

A similar approach using bis(chlorozinc)polyphenylene reagents has yielded a series of phenylene-bridged bisferracarboranes, isolated as yellow air-stable solids (Scheme 4).12 An X-ray crystallographic study on the triphenylene complex 19 Scheme 4 b=bh,b... 

Meta- or para-phenylene-bridged oligobismuthines are prepared by the reaction of chlorodiphenylbismuthine and the corresponding dicuprobenzene bis(dimethyl sulfide) complexes [98OM4049]. The products can be isolated by gel permeation chromatography (GPC) separation. 

Osuka, A., M. Ikeda, H. Shiratori, Y. Nishimura, and I. Yamazaki (1999). Accelerated singlet energy transfer in bis(phenylethynyl)phenylene-bridged 5,10,15,20-te(raryl zinc-free base hybrid diporphyrins. J. Chem. Soc. Perkin Trans. 2 (5), 1019-1026. 

Ruiz-Botella S, Peris E. Phenylene and biphenylene-bridged bis-imidazolylidenes of palladium. Influence of the presence of pyrene tag s on the catalytic activity of the complexes. Organometallics. 2014 33 5509-5516. 

Munz D, Poethig A, Tronnier A, Strassner T. ortho-Phenylene bridged palladium bis-N-heterocyclic carbene complexes synthesis, structure and catalysis. Dalton Trans. 2013 42 7297-7304. 

Huckaba AJ, Hollis TK, Howell TO, Valle HU, Wu Y. Synthesis and characterization of a 1,3-phenylene-bridged N-alkyl bis(benzimidazole) CCC-NHC pincer ligand precursor homobimetaUic silver and rhodium complexes and the catalytic hydrosilylation of phenylacetylene. Organometallics. 2013 32 63-69. 

Following the research of bis- and trisureas, Wu and co-workers prepared acyclic, ortho-phenylene-bridged oligourea ligands 44a-c. Receptors 39 and 44a-c coordinated chloride anions in either a mononuclear pattern or a dinuclear foldamer pattern, depending on the number of the urea groups present. Crystal structure of foldamer complex 44a Cl is shown in Fig. 5.36. Each chloride anion was boimd by four... 

The preferred conformations of ketodiester phosphonium ylides were investigated. Acyclic diphosphonium bis-ylides from the corresponding diphosphonium precursors were systematically analysed with respect to the steric demand at the phosphorus centers and the substitution pattern of the phenylene bridge. In the o-phenylene series, bis-ylides were not observed due to the instability of the mono-ylide intermediates. In contrast, in the m-phenylene series, in which the two phosphonium centers were in remote positions, the bis-ylide was fully characterized. ... 

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