Square pyramidal geometry, molecular

In nickel and palladium dithiobenzoato complexes, four-membered chelate rings are formed (366), whereas, in the corresponding phenyl-dithio acetates [M2(S2CCH2Ph)4], the dithio ligands act as bridging groups between the two metal atoms, with the formation of binuclear units (367). The molecular structure of the latter compounds shows that each metal atom is coordinated to four sulfur atoms and to the other metal atoms in a square-pyramidal geometry. Other evidence for... 

The square pyramidal geometry of CIF5 completes our inventory of molecular shapes. Figure 9-26 summarizes the characteristics of atoms with steric number 6. 

C09-0129. Tellurium compounds, which are toxic and have a hideous stench, must be handled with extreme care. Predict the formula of the tellurium-fluorine molecule or ion that has the following molecular geometry (a) bent (b) T-shaped (c) square pyramid (d) trigonal bipyramid (e) octahedron and (Q seesaw. 

The synthesis and characterization of V02+ complexes of hydrazones (94) and (95) derived from benzoylhydrazine and o-hydroxy aromatic aldehydes and ketones were also reported772 and molecular weight determinations, IR, electronic spectra and magnetic properties were explained assuming a dimeric structure (96) with each unit having a five-coordinate square pyramidal geometry. 

Figure 39 The molecular structure of (a) [VO(H2daaen)], (b) [VO(H2daanpn)], (c) [CuVO(daaen)]-H20 (179) and (d) [(VO)2(daaen)]. In all four molecules, the vanadium atom is coordinated in a square pyramidal geometry and is displaced above the 0202 plane by ca. 0.56 A (for (d), no data are given)897...

A more elegant pathway starts from homoleptic LnR3 (R = CH(SiMe3)2, OC6H3fBu2-2,6) [244]. The molecular structure of (OEP)Lu[CH(SiMe3)2] displays a square pyramidal coordination geometry at lutetium with a terminal Lu-C distance of 2.374(8) A (Fig. 24, Table 19). 

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