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Cluster Core Isomerism Induced by Crystal Packing Effects in the [HCo15Pd9C3(CO)38]2- Molecular Nanocluster.


ABSTRACT: This article describes a rare case of cluster core isomerism in a large molecular organometallic nanocluster. In particular, two isomers of the [HCo15Pd9C3(CO)38]2- nanocluster, referred as TP-Pd9 and Oh-Pd9, have been structurally characterized by single-crystal X-ray crystallography as their [NMe3(CH2Ph)]2[HCo15Pd9C3(CO)38]·CH2Cl2 (ca. 1:1 TP-Pd9 and Oh-Pd9 mixture), [NMe3(CH2Ph)]2[HCo15Pd9C3(CO)38]·2CH2Cl2 (mainly TP-Pd9), [NEt3(CH2Ph)]2[HCo15Pd9C3(CO)38]·CH2Cl2 (mainly TP-Pd9), [MePPh3]2[HCo15Pd9C3(CO)38]·2.5CH2Cl2 (mainly TP-Pd9), and [MePPh3]2[HCo15Pd9C3(CO)38] (Oh-Pd9) salts. The cluster core of TP-Pd9 is a tricapped trigonal prism, whereas this is a tricapped octahedron in Oh-Pd9. The presence in the solid state of the Oh-Pd9 or TP-Pd9 isomers depends on the cation employed and/or the number and type of co-crystallized solvent molecules. Often, mixtures of the two isomers, within the same single crystal or as mixtures of different crystals within the same crystallization batch, are obtained. Structural isomerism in organometallic nanoclusters is discussed and compared to that in Au-thiolate nanoclusters.

SUBMITTER: Berti B 

PROVIDER: S-EPMC6644833 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Cluster Core Isomerism Induced by Crystal Packing Effects in the [HCo<sub>15</sub>Pd<sub>9</sub>C<sub>3</sub>(CO)<sub>38</sub>]<sup>2-</sup> Molecular Nanocluster.

Berti Beatrice B   Ciabatti Iacopo I   Femoni Cristina C   Iapalucci Maria Carmela MC   Zacchini Stefano S  

ACS omega 20181016 10


This article describes a rare case of cluster core isomerism in a large molecular organometallic nanocluster. In particular, two isomers of the [HCo<sub>15</sub>Pd<sub>9</sub>C<sub>3</sub>(CO)<sub>38</sub>]<sup>2-</sup> nanocluster, referred as TP-Pd<sub>9</sub> and Oh-Pd<sub>9</sub>, have been structurally characterized by single-crystal X-ray crystallography as their [NMe<sub>3</sub>(CH<sub>2</sub>Ph)]<sub>2</sub>[HCo<sub>15</sub>Pd<sub>9</sub>C<sub>3</sub>(CO)<sub>38</sub>]·CH<sub>2</sub>Cl<s  ...[more]

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