Ligand connectivity

Oligopyridine two-dimensional ligands connected by alkyne spacers with 1-4 ethynyl groups as photoactive conductors of molecular size 96CC1707. 

Transfer of the dehydrated cation into the cavity of the macrocycUc ligand connected with the standard Gibbs energy for the cation-Ugand cavity interaction, AC j. ... 

The configuration of the eight oxygen atoms bonded to the thorium atom in thorium(IV) acetylacetonate, Th(C H70 )4, has been found76 to be that of the tetragonal antiprism (Fig. 5-16). Each bidentate ligand connects adjacent corners of one of the squares of the polyhedron. 

Table 2 Major Structure Types, Classified by Metal Polyhedron and Ligand Connectivity...

The octagonal toroid Ni8(SCH2C02Et)i6272 (8a) has pairs of doubly-bridging thiolate ligands connecting adjacent square-planar metal atoms. 

This reduction in symmetry of the metal array occurs in Pdi0( i3-CO)4(p-CO)g(PBu3)6,304 where there is also a lower symmetry set of ligand connections. There is still a (Pd )6 octahedron, capped by (p3-CO) on four tetrahedrally arrayed faces, but the Pd° are located unsymmetrically over the remaining faces, being connected by doubly-bridging carbonyls to the equatorial Pd only. The Pd° thereby constitute a disphenoid rather than a tetrahedron. Phosphine ligands terminate the Pd° and the two axial Pd . 

The second term RTln(k) is the sum total of the microscopic free energies that arise from making metal-ligand connections assuming all of those connections are inter molecular. We will correct... 

---