Carbonyl Chalcogenides Clusters Existing as Disguised Forms of Hydrocarbon Isomers

Abstract

The 4n Series Method has been utilized to categorize, analyze and predict structures for transition metal carbonyl, borane, hydrocarbon and Zintl ion clusters. The method is being extended to study carbonyl chalcogenide clusters. Adequate examples have been given to demonstrate the application of the 4n series method to categorize clusters and where possible predict their possible skeletal structures. In this paper, the method is being applied to the study of carbonyl chalcogenide cluster complexes. What has been found is the striking structural similarity of a wide range of carbonyl chalcogenide clusters to those of corresponding hydrocarbon clusters. It was observed that when a derived hydrocarbon from a cluster, F CH = C n H q , is such that n<q, the cluster portrays structural similarity with an equivalent hydrocarbon. On the other hand when n>q, the "hydrocarbon character" becomes reduced and the typical cluster tendencies increase. When n = q, the situation becomes more or less a borderline case. When q=0, then F CH = C n . When the series becomes bi-capped or more, then the equivalent carbon cations are obtained.

A Hypothetical Model for the Formation of Transition Metal Carbonyl Clusters Based upon 4n Series Skeletal Numbers

“…The procedure for categorization and structural prediction of fragments, molecules and clusters using the 4n series method is now well established (Kiremire, 2016a(Kiremire, , 2016b(Kiremire, , 2016c. What is more interesting and exciting is that on closer scrutiny of the 4n series method is that skeletal elements and ligands can actually be assigned skeletal k values.…”

“…The recently developed 4n series method has been found to analyze and categorize atoms, molecules, fragments and clusters (Kiremire, 2016a(Kiremire, , 2016b(Kiremire, , 2016c. The method highly complements Wade-Mingos rules which have been in existence for more than forty years (Wade, 1991;Mingos, 1972Mingos, , 1984Mingos, , 1991.Other methods for dealing with electron counting in clusters have been devised (Lipscomb, 1976;King, 1986aKing, , 1986bJensen, 1978;Teo, et al, 1984;Wales, 2005;Wheeler and Hoffmann, 1986;Jemmis, et al, 2000Jemmis, et al, , 2001aJemmis, et al, , 2001b.…”