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[PtZn<sub>2</sub>Ge<sub>18</sub>(Hyp)<sub>8</sub>] (Hyp = Si(SiMe<sub>3</sub>)<sub>3</sub>): A Neutral Polynuclear Chain Compound with Ge<sub>9</sub>(Hyp)<sub>3</sub> Units

DOI

25

Citations

34

References

2018

Year

Oleksandr Kysliak, Dung Nguyen, Andre Z. Clayborne, Andreas Schnepf
Inorganic Chemistry

Abstract

The reaction of [ZnGe<sub>18</sub>(Hyp)<sub>6</sub>] (Hyp = Si(SiMe<sub>3</sub>)<sub>3</sub>) with Pt(PPh<sub>3</sub>)<sub>4</sub> gives the neutral polynuclear complex of Ge<sub>9</sub>(Hyp)<sub>3</sub> units [HypZn-Ge<sub>9</sub>(Hyp)<sub>3</sub>-Pt-Ge<sub>9</sub>(Hyp)<sub>3</sub>-ZnHyp], 1. Within 1, the central Pt atom is bound η<sup>3</sup> to both Ge<sub>9</sub>(Hyp)<sub>3</sub> units to which further ZnHyp units are bound again, symmetric η<sup>3</sup>, to the other side of the Ge<sub>9</sub>(Hyp)<sub>3</sub> units, leading to the longest chain compound exhibiting Ge<sub>9</sub>(Hyp)<sub>3</sub> units that is known to date. Dissolved crystals of 1 give a violet solution, showing an absorption maximum around 543 nm. Further UV-vis investigations on different M <sub>x</sub>Ge<sub>9</sub>(Hyp)<sub>3</sub> compounds show that the absorption maximum depends on the number of transition metal atoms bound to the Ge<sub>9</sub>(Hyp)<sub>3</sub> unit, which is supported by TD-DFT calculations.

References

YearCitations

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