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The Parent Diarsene HAs=AsH as Side-on Bound Ligand in an Iron Carbonyl Complex.

ABSTRACT: The terminal diarsene HAs=AsH ligand attracts special interest concerning its bonding relation in comparison to its isolable relative, ethene. Herein, by the methanolysis of [{Fe(CO)4 }As(SiMe3 )3 ] (1) the synthesis of [{Fe(CO)4 }(?2 -As2 H2 )] (2) is reported, containing a parent diarsene as unprecedented side-on coordinated ligand. Following this synthetic route, also the D-labeled complex [{Fe(CO)4 }(?2 -As2 D2 )] (2D) could be isolated. The electronic structure and bonding situation of 2 was elucidated by DFT calculations revealing that 2 is best described as an olefin-like complex. Moreover, the reactivity of 2 towards the Lewis acids [{M(CO)5 }(thf)] (M=Cr, W) was investigated, leading to the complexes [Fe(CO)4 AsHW(CO)5 ]2 (3) and [{Fe(CO)4 }2 AsH{Cr(CO)5 }] (4), respectively.

SUBMITTER: Rund R

PROVIDER: S-EPMC6856853 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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The Parent Diarsene HAs=AsH as Side-on Bound Ligand in an Iron Carbonyl Complex.

Rund Reinhard R Balázs Gábor G Bodensteiner Michael M Scheer Manfred M

Angewandte Chemie (International ed. in English) 20190925 45

The terminal diarsene HAs=AsH ligand attracts special interest concerning its bonding relation in comparison to its isolable relative, ethene. Herein, by the methanolysis of [{Fe(CO)4 }As(SiMe3 )3 ] (1) the synthesis of [{Fe(CO)4 }(η2 -As2 H2 )] (2) is reported, containing a parent diarsene as unprecedented side-on coordinated ligand. Following this synthetic route, also the D-labeled complex [{Fe(CO)4 }(η<su ...[more]

PMID: 31424604

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