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Syntheses and Structures of Group 10 Metal POCOP Pincer Complexes Bearing A Mercapto‐ o– carborane Auxiliary Ligand
Author(s) -
Zhang Jie,
Cao Bula,
Ding Yazhou,
Chang Jiarui,
Li Shujun,
Chen Xuenian
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201803908
Subject(s) - pincer movement , phosphinite , pincer ligand , carborane , ligand (biochemistry) , chemistry , steric effects , crystallography , metal , stereochemistry , medicinal chemistry , organic chemistry , biochemistry , receptor , catalysis
Several bis(phosphinite) (POCOP) group 10 metal pincer complexes bearing a mercapto‐ o ‐carborane auxiliary ligand, [2,6‐( i Pr 2 PO) 2 C 6 H 3 ]MS‐ o ‐C 2 B 10 H 11 (M=Ni, 1 ; Pd, 2 ; Pt, 3 ), were synthesized and fully characterized. Single crystal X‐ray diffraction analyses indicated that the square planar geometries of the metal centers and the POCOP pincer backbones were not significantly distorted. However, relatively weak M−S bonds were observed for all of these complexes in the solid state and a remarkable small Pt‐C ipso coupling constant (116 Hz) was detected for complex 3 during the NMR study, implying a weak Pt‐C ipso interaction in solutions. Despite the weak M−S bonds and the faint M–C ipso interaction, these complexes are relatively stable because of the steric effect of the bulky auxiliary ligand. The stability of these boron‐rich group 10 metal pincer complexes makes them potentially useful in material science.