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The reactivities of Mo cluster — A selective substitution reaction of the bridging (dtp) ligand and the crystal structure of {Mo 3 S 4 (μ‐O 2 CR)(dtp) 3 (Py)}
Author(s) -
ShaoFang Lu,
JianQuan Huang,
MingDong Huang,
JinLin Huang
Publication year - 1989
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19890070105
Subject(s) - chemistry , crystal structure , ligand (biochemistry) , crystallography , molecule , denticity , molybdenum , stereochemistry , cluster (spacecraft) , substitution reaction , bridging ligand , medicinal chemistry , inorganic chemistry , organic chemistry , biochemistry , receptor , computer science , programming language
The reaction of trinuclear molybdenum cluster {Mo 3 S 4 (μ‐dtp) (dtp) 3 (H 2 O)} 1 [dtp= S 2 P(OEt) 2 ] with RCO 2 Na (RH, CH 3 ) in the presence of Py gave the black compounds {Mo 3 S 4 {μ‐O 2 CR) (dtp) 3 (Py)} (2, RH, 3, RCH 3 ). Both compounds are characterized by X‐ray crystallography. It is shown that crystals 2 and 3 belong to space group P &1bar; with Z =2 and a =10.519(2), b = 12.121(2), c =15.757(2)Å, α=93.27(1), β=94.63(1), γ = 105.22(1)°, V = 1925 Å 3 for crystal 2, whereas a =9.556 (2), b =14.067(7), c =15.914 (9) Å, α=101.41 (4), β=101.44(4), γ‐74.26(3)°, V =1994Å 3 for crystal 3. The final R factors are 0.041 and 0.048 for crystal 2 and 3 respectively. The structure analysis indicates that (O 2 CR) − ligand selectively substitutes the bridging (dtp) ligand. This type of Mo, cluster molecule where structure contains two species of bidentate ligand is for the first time to be obtained by us.