Structural diversity in phenyl bismuth(III) bis(carboxylate) complexes

被引:12
作者
Kumar, Ish [1 ]
Bhattacharya, Prateek [1 ]
Whitmire, Kenton H. [1 ]
机构
[1] Rice Univ, Dept Chem, Houston, TX 77005 USA
关键词
Bismuth; Carboxylate; Salicylate; Anthranilate; Dimer; Coordination polymer; Oligomer; Aryl; Solvolysis; SOLVENT-FREE; CARBOXYLATES; CLUSTERS; OXIDE; PRECURSORS;
D O I
10.1016/j.jorganchem.2015.06.023
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
In order to probe the effect of solvent and substituents on the formation of bismuth carboxylates, triphenylbismuth (BiPh3) was treated with salicylic acid, 5-bromosalicylic acid, 3-methoxysalicylic acid, 5-nitrosalicylic acid, 3-methylanthranilic acid, 5-chloroanthranilic acid, and N-acetylanthranilic acid in a 1:2 ratio in a variety of solvents. The following compounds were isolated and structurally characterized: [PhBi(5-Br-2-OH-C6H3CO2)(2)(Me2CO)], 1; [PhBi(5-Br-2-OH-C6H3CO2)(2)(EtOH)]center dot(EtOH) (H2O), 2; [PhBi(5-O2N-2-OH-C6H3CO2)(2)(4,4'-bipy)]center dot EtOH (4,4'-bipy 4,4'-bipyridine), 3; [PhBi(5-CI-2-NH2-C6H3CO2)(2)], 4; [Ph2Bi2(3-MeO-2-OH-C6H3CO2)(4)(EtOH)], 5; [Ph2Bi2(3-MeO-2-OH-C6H3CO2)(4)(i-PrOH)], 6; [PhBi(2-MeC(O)NH-C6H3CO2)(2)]center dot EtOH, 7; [PhBi(3-MeO-2-OH-C6H3CO2)(2)](infinity)center dot Phal3, 8; [PhBi(3-Me-2-NH2C6H3CO2)(2)(2,2'-bIPY)]center dot 0.42MeCN; (2,2'-bipY 2,2'-bipyridine), 9; cisAPhBi(5-Br-2-OH-C6H3CO2)(2)](2), 10; trans- [PhBi(5-Br-2-OH-C6H3CO2))(2)](2)center dot MeCN, 11; [PhBi(5-Br-2-OH-C6H3CO2))(2)](2). MeOH, 12, trans[PhBi(2-0H-C6H4CO2)2]2, 13. Compounds 1 and 2 are monomeric possessing a coordinated solvent molecule in an equatorial coordination site of a pentagonal pyramidal bismuth(III) center. The same coordination geometry is found in 3 where two such units are tethered together via the 4,4'-bipyridine ligand. Compounds 5 and 6 form dimers in which one Bi atom attains a pentagonal pyramidal geometry via coordination of the solvent and the other via binding to the phenol group of a 3-methoxysalicylate ligand attached to the other Bi atom. Compounds 7 and 8 are polymeric. In 7, a coordination polymer is created by the donation of the acetyl oxygen atom of the [PhBi(2-MeC(O)NHC6H3CO2)(2)] unit to an adjacent [PhBi(2-MeC(0)NHC6H3CO2)21 center, while in 8 a similar situation arises but through the phenolic and methoxy oxygen atoms of a 3-methoxysalicylate ligand, giving rise to the first observed hexagonal pyramidal coordination complex of a bismuth carboxylate. In 9, one of the carboxylate ligands is bidentate while the other remains monodentate, displaying the same structural geometry as previously reported for [PhBi(2-MeO-C6H4CO2)(2)(2,2'-bipy)]center dot 0.5EtOH and [PhBi(4-Me-2-OH-C6H3CO2)(2)(2,2'-bipy)]. Compounds 10-13 are dimeric structures arising from shared carboxylate oxygen atoms that bridge the two bismuth atoms. (C) 2015 Elsevier By. All rights reserved.
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页码:153 / 167
页数:15
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