Synthesis and structure of half-sandwich palladium(II) complexes of 1,4,7-trithiacyclononane ([9]aneS3) incorporating halide, phosphine and heterocyclic ligands

Synthesis and structure of half-sandwich palladium(II) complexes of 1,4,7-trithiacyclononane ([9]aneS3) incorporating halide, phosphine and heterocyclic ligands
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含有卤化物、膦和杂环配体的 1,4,7-三硫杂环壬烷 ([9]aneS3) 半夹心钯 (II) 配合物的合成和结构

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发表时间:
1996
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通讯作者:
M. Schröder
M. Schröder
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文献类型:
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作者:
A. Blake;Y. V. Roberts;M. Schröder

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在MeCN-CH2Cl2(3:1v/v)中,PdCl2与3,4,7-三硫杂环己烷反应生成顺式[Pd([9]ANES3)Cl2],可转化为一系列半三明治钯(II)配合物cis-[Pd([9]ANES3)Cl(L)]Pf6[L=PPPh3或P(C6H11)3]和顺式[Pd([9]ANES3)L][Pf6]2[L=2PPh3,Ph_2PCH_2PPh2(Dppm),Ph_2PCCH_2PPh2(Ppde),(Ph_2PCH_2)3Cme,C6H11](Ph2PCH2)2[Ph2P(O)CH2]2 CME,2,2‘-联吡啶(Bipy)或1,10-邻菲咯啉(Phen)}。测定了顺式[Pd([9]AneS3)Cl(PPh3)]Pf6和顺式[Pd([9]AneS3)L][Pf6]2{L=2PPh3,dppm,(Ph_2PCH_2)_2[Ph_2P(O)CH_2]CME,bipy或phen}的单晶结构。它们都显示了L和[9]ANES3的两个S供体对PdII的方形平面配位,以及与[9]ANES3的第三个S供体Pd⋯SAP 2.990(2)A对于顺式-[Pd([9]ANES3)Cl(PPh3)]Pf6,2.948(13)A对于顺式-[Pd([9]ANS3)(Phen)][Pf6]2,2.877(3)A对于顺式-[Pd([9]ANES3)(PPh3)2][Pf6]2,对于顺-[Pd([9]AnnS3)(Bipy)][Pf6]2,2.722(4)和2.768(5)A对于两个独立的顺-[Pd([9]AnnS3){(Ph2PCH2)2[Ph2P(O)CH2]cme}][Pf6]2和2.698(3)A对于顺-[Pd([9]ane S3)(Dppm)][Pf6]2。因此,在固态中,在PdII,第三个S供体[9]ANES3形成长程心尖相互作用的总体趋势为五协调。这种相互作用的长度受配体L的电子性质和络合阳离子的总电荷的强烈影响。讨论了这些络合物的氧化还原性质。
Reaction of PdCl2 with [9]aneS3(1,4,7-trithiacyclononane) in MeCN–CH2Cl2(3 : 1 v/v) afforded cis-[Pd([9]aneS3)Cl2] which can be converted into a range of half-sandwich palladium(II) complexes cis-[Pd([9]aneS3)Cl(L)]PF6[L = PPh3 or P(C6H11)3] and cis-[Pd([9]aneS3)L][PF6]2{L = 2PPh3, Ph2PCH2PPh2(dppm), Ph2PCH2CH2PPh2(dppe), (Ph2PCH2)3CMe, (Ph2PCH2)2[Ph2P(O)CH2]2 CMe, 2,2′-bipyridine (bipy) or 1,10-phenanthroline (phen)}. The single-crystal structures of cis-[Pd([9]aneS3)Cl(PPh3)]PF6 and cis-[Pd([9]aneS3)L][PF6]2{L = 2PPh3, dppm, (Ph2PCH2)2[Ph2P(O)CH2]CMe, bipy or phen} have been determined. They all show square-planar co-ordination of PdII by L and two S-donors of [9]aneS3, as well as an additional apical interaction with the third S-donor of [9]aneS3, Pd ⋯ Sap 2.990(2)A for cis-[Pd([9]aneS3)Cl(PPh3)]PF6, 2.948(13)A for cis-[Pd([9]aneS3)(phen)][PF6]2, 2.877(3)A for cis-[Pd([9]aneS3)(PPh3)2][PF6]2, 2.808(13)A for cis-[Pd([9]aneS3)(bipy)][PF6]2, 2.722(4) and 2.768(5)A for the two independent molecules of cis-[Pd([9]aneS3){(Ph2PCH2)2[Ph 2P(O)CH2]CMe}][PF6]2 and 2.698(3)A for cis-[Pd([9]aneS3)(dppm)][PF6]2. In the solid state there is, therefore, a general tendency for the third S-donor of [9]aneS3 to form a long-range apical interaction giving overall five-co-ordination at PdII. The length of this interaction is influenced strongly by the electronic properties of the ligand L and by the overall charge of the complex cation. The redox properties of these complexes are discussed.