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A platinum compound is thought to be [Pt(PF3)(PMe3)(NCS)2]. What is a possible structure and what is...

A platinum compound is thought to be [Pt(PF3)(PMe3)(NCS)2]. What is a possible structure and what is the Pt electron count? What information could you obtain about the structure of the compound via NMR spectroscopy?

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Answer #1

The structure of platinum complex [Pt(PF3)(PMe3)(NCS)2] is square planar. because in this complex Pt coordination number is 4, and Pt is the d8 system. and generally, all d8 complex is stable in square planar geometry.

Electron count in this complex:

Pt +2 = 5d8 6s0

electron donation from PF3 is 2, from PMe3 is 2 and from NCS is 2,

so total electron would be 8+2+2+4 = 16.

so given complex is 16 electron square planar.

Via 19 F NMR spectroscopy, we can get the coupling between Pt and PF3.

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