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- W4319791640 abstract "Abstract Reduction of the Ir 4 (CO) 12 cluster by two equivalents of Cp* 2 Cr (Cp* is η 5 ‐Me 5 C 5 ) produces the (Cp* 2 Cr + ) 2 {Ir 4 (CO) 11 − } 2 ⋅ 4 C 6 H 4 Cl 2 complex. Two Ir 4 (CO) 11 − anions are bonded by a single Ir−Ir bond in the anionic {Ir 4 (CO) 11 − } 2 dimer. The bond length is 2.8339(5) Å at 100 K. Therefore, clusters can form metal‐metal bonded dimers under reduction. The {Ir 4 (CO) 11 − } 2 dimers do not dissociate to paramagnetic species up to 340 K and even higher temperatures that indicates their high stability. DFT calculations show that dimerization of clusters can occur due to the loss of one CO group in neutral or anionic clusters. Dimerization of anionic transition metal cluster is to a certain extend similar to dimerization of negatively charged carbon cluster – fullerene C 60 ⋅ − and here we compare both types of dimers." @default.
- W4319791640 created "2023-02-11" @default.
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- W4319791640 date "2023-02-06" @default.
- W4319791640 modified "2023-09-26" @default.
- W4319791640 title "A dimer of the negatively charged carbonyl cluster {Ir<sub>4</sub>(CO)<sub>11</sub><sup>−</sup>}<sub>2</sub> bonded by a single Ir−Ir bond, and comparison with the singly bonded (C<sub>60</sub><sup>−</sup>)<sub>2</sub> dimer." @default.
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- W4319791640 doi "https://doi.org/10.1002/zaac.202200368" @default.
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