Terminal ligand

Using a triazole-/pyrimidine-containing hybrid ligand, terminally coordinated in a thiocyanate-bridged copper(II) dimer, Haasnoot et al. reported250 the structure of the f3 isomer of complex (288), revealing that the Cu-SCN distance is relatively short compared to other Cu-SCN... 

Each skeletal boron or carbon atom has a hydrogen atom (or some other singly bonded ligand) terminally attached to it, by a bond radiating outward (exo) away from the center of the polyhedron, to which a pair of electrons is allocated. 

Certain cobalt(II) complexes such as the cobaloxime XXVIIa and the corresponding boron fluoride XXVIIb (L is a ligand) terminate propagating chains by a transfer reaction called... 

Title Polymerization Using Ligand Initiators and Ligand Terminators... 

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 . 

Thiocyanate complexes of copper are a further illustration of the versatile bonding behavior of the NCS ligand terminal N e.g. 107),307-312-322 terminal S (108),308 bridging 1,3-ft (e.g. 109)309 310-323 and 1,1-ju-S e.g. 110)311,312 have been reported. In the recently reported structure of a copper NCS complex both terminal and 1,1-fi-bonded NCS fragments are present with as a special structural feature a considerable bending (140°) in the NCS ligands.312... 

Fig. 1. OR-ligands terminal and bridging bonding mode - depending on steric and electronic factors...

Fig. 4. ate Complex Nd(tritox)3 (p-CI)Li(THF)3 (left) and LnM,(0)y core of monolanthanide alkali metal clusters ( O stands for bridging OtBu ligands terminal ones are depicted fully)... 

Attempted synthesis of LnCp according to Scheme 19 resulted in THF cleavage and generation of a n-butoxide ligand terminally functionalized with pentamethylcyclopentadiene (Table 14) [202,203]. The in situ generated alkoxide ligand is bonded in a monodentate fashion to the lanthanide elements. 

Acetylacetonates, which have delocalized electronic Ji-systems including the atoms 02C3, form five-atomic chelates. Dialkyldigallium compounds (109 and 110) containing these ligands terminally attached to both Ga atoms of the Ga-Ga bonds are easily available by the reaction of dibenzoyl- or dipivaloylmethane with 53 similar to the reactions of the carboxylic acids shown in Eq. (19).185,186 Centrosymmetric molecules were formed with the substituents in trans arrangement... 

Center metals (M-M ) Bridged ligand Terminal ligand Coor. numb er 4 d" Coordination geometry Magnetism ReC... 

The coordination of naked antimony atoms Sb is achieved in complexes with Sb, Sb2, cyc/o-Sbs, and cyclo-Sbs ligands. Terminal Sb ligands exist in the anionic... 

Thiocyanate complexes of copper are a further illustration of the versatile bonding behavior of the NCS ligand terminal N e.g. terminal S (108), bridging 1,3-/f e.g. i09) -3ioj23... 

In anion, 6 Rh atoms form trigonal prism, edges associated with symmetrically bridging CO groups. Remaining 6 CO ligands terminally bonded to Rh s Carbide atom occupies centre of prism [see structure (25)]... 

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