Heteroatomic Deltahedral Clusters:  Synthesis and Structures\nof &lt;i&gt;closo&lt;/i&gt;-[Bi&lt;sub&gt;3&lt;/sub&gt;Ni&lt;sub&gt;4&lt;/sub&gt;(CO)&lt;sub&gt;6&lt;/sub&gt;]&lt;sup&gt;3-&lt;/sup&gt;, &lt;i&gt;closo&lt;/i&gt;-[Bi&lt;sub&gt;4&lt;/sub&gt;Ni&lt;sub&gt;4&lt;/sub&gt;(CO)&lt;sub&gt;6&lt;/sub&gt;]&lt;sup&gt;2-&lt;/sup&gt;, the Open\nCluster [Bi&lt;sub&gt;3&lt;/sub&gt;Ni&lt;sub&gt;6&lt;/sub&gt;(CO)&lt;sub&gt;9&lt;/sub&gt;]&lt;sup&gt;3-&lt;/sup&gt;, and the Intermetalloid\n&lt;i&gt;closo&lt;/i&gt;-[Ni&lt;i&gt;&lt;sub&gt;x&lt;/sub&gt;&lt;/i&gt;@{Bi&lt;sub&gt;6&lt;/sub&gt;Ni&lt;sub&gt;6&lt;/sub&gt;(CO)&lt;sub&gt;8&lt;/sub&gt;}]&lt;sup&gt;4-&lt;/sup&gt;

Jose M. Goicoechea (1852669); Michael W. Hull (2366497); Slavi C. Sevov (1536226)

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Heteroatomic Deltahedral Clusters: Synthesis and Structures\nof closo-[Bi3Ni4(CO)6]3-, closo-[Bi4Ni4(CO)6]2-, the Open\nCluster [Bi3Ni6(CO)9]3-, and the Intermetalloid\ncloso-[Nix@{Bi6Ni6(CO)8}]4-

Jose M. Goicoechea (1852669)Michael W. Hull (2366497)Slavi C. Sevov (1536226)

Year: 2016 Journal: OPAL (Open@LaTrobe) (La Trobe University) Publisher: La Trobe University

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Abstract

Reactions of ethylenediamine solutions of K4Bi5 with Ni(PPh3)2(CO)2 yielded four novel hetero-atomic Bi/Ni deltahedral clusters. Three of them, the 7-atom pentagonal bipyramidal [Bi3Ni4(CO)6]3-, the\n8-atom dodecahedral [Bi4Ni4(CO)6]2-, and the Ni-centered or empty 12-atom icosahedral [Nix@{Bi6Ni6(CO)8}]4-,\nare closo-species according to both electron count and shape. The centered icosahedral cluster resembles\npacking in intermetallic compounds and belongs to the emerging class of intermetalloid clusters. The shape\nof the fourth cluster, [Bi3Ni6(CO)9]3-, can be derived from the icosahedral Ni-centered [Ni@{Bi6Ni6(CO)8}]4-\nby removal of three Bi- and one Ni-atoms of two neighboring triangular faces. The clusters were structurally\ncharacterized by single-crystal X-ray diffraction in compounds with potassium cations sequestered by 2,2,2-crypt or 18-crown-6 ether. They were also characterized in solution by electrospray mass spectrometry.

Keywords:

Icosahedral symmetry Intermetallic Dodecahedron Ethylenediamine Pentagonal bipyramidal molecular geometry Cluster (spacecraft)

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Inorganic Fluorides and Related Compounds

Physical Sciences → Chemistry → Inorganic Chemistry

Crystal Structures and Properties

Physical Sciences → Materials Science → Electronic, Optical and Magnetic Materials

Crystallography and molecular interactions

Physical Sciences → Chemistry → Physical and Theoretical Chemistry

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