Copper complexes of 1,3-bis(2-pyridyl)-1-thiapropane (bpt) and pyridine-2(1H)-thione. Crystal structure of [{Cu(μ-O2CMe)2(bpt)}2 ] and metal-promoted cleavage of bpt
作者:Sian C. Davies、Marcus C. Durrant、David L. Hughes、Kerstin Leidenberger、Christian Stapper、Raymond L. Richards
DOI:10.1039/a700711f
日期:——
The reactivity of the asymmetric thioether
1,3-bis(2-pyridyl)-1-thiapropane
[1-(2-pyridyl)-2-(2-pyridylsulfanyl)ethane] (bpt) with
copper-(I) and -(II) starting materials has been
investigated. Reaction with [Cu(NCMe)
4
]PF
6
in MeCN
gave a cluster formulated as
[Cu
4
(bpt)
6
][PF
6
]
4
, whilst
reaction in tetrahydrofuran resulted in partial cleavage of bpt to give
the mixed thionato–thioether complex
[Cu
2
(SC
5
H
4
N)(bpt)]PF
6
[SC
5
H
4
NH = pyridine-2(1H)-
thione]. Reaction with
[Cu
2
(µ-O
2
CMe)
4
] in MeOH gave
the dimer
[Cu(µ-O
2
CMe)
2
(bpt)}
2
], whose crystal structure shows that the bpt ligands are
monodentate and co-ordinated via the N atom remote from the
thioether. The compound bpt undergoes cleavage with other
copper(II) salts such as Cu(BF
4
)
2
,
ultimately giving the hexameric copper(I) complex
[Cu
6
(SC
5
H
4
N)
6
]. The details
of this reaction have been investigated. Reaction of
SC
5
H
4
NH with Cu(NO
3
)
2
in the
presence of HNO
3
gave
[Cu(NO
3
)(SC
5
H
4
NH)
2
], which
in turn reacted progressively with PPh
3
to give
[Cu(NO
3
)(SC
5
H
4
NH)
2
(PPh
3
)] and the known complex
[Cu(SC
5
H
4
NH)
2
(PPh
3
)
2
]NO
3
, whose crystal structure has been determined.
Other complexes of SC
5
H
4
NH with
copper(I) and a range of anions have been prepared, and the
crystal structure of the dimer
[Cu
2
(SC
5
H
4
NH)
6
][MeC
6
H
4
SO
3
]
2
is reported.
不对称硫醚1,3-双(2-吡啶基)-1-硫代丙烷[1-(2-吡啶基)-2-(2-吡啶硫基)乙烷](bpt)与铜(I)和铜(II)起始物的反应活性已进行了研究。在MeCN中与[Cu(NCMe)_4]PF_6反应得到簇合物[Cu_4(bpt)_6][PF_6]_4,而在四氢呋喃中反应则导致bpt的部分裂解,得到硫氰酸根-硫醚混合配合物[Cu_2(SC_5H_4N)(bpt)]PF_6[SC_5H_4NH=2(1H)-吡啶硫酮]。在MeOH中与[Cu_2(µ-O_2CMe)_4]反应得到二聚体[Cu(µ-O_2CMe)_2(bpt)]_2,其晶体结构表明bpt配体是单齿配位的,并与硫醚远的氮原子进行配位。bpt与铜(II)盐,例如Cu(BF_4)_2,发生裂解反应,最终得到六核铜(I)配合物[Cu_6(SC_5H_4N)_6]。该反应的细节已经进行了研究。SC_5H_4NH与Cu(NO_3)_2在HNO_3存在下反应得到[Cu(NO_3)(SC_5H_4NH)_2],后者逐步与PPh_3反应,依次得到[Cu(NO_3)(SC_5H_4NH)_2(PPh_3)]和已知的配合物[Cu(SC_5H_4NH)_2(PPh_3)_2]NO_3,其晶体结构已被测定。SC_5H_4NH与其他铜(I)配合物以及一系列阴离子已制备出其它配合物。报告了二聚体[Cu_2(SC_5H_4NH)_6][MeC_6H_4SO_3]_2的晶体结构。