Titanocene-based group-11 metal ions; solid-state structure of {[(η5-C5H4SiMe3)2Ti(CCPh)2]2Ag}NO3

Silver(I) acetylides stabilized by η2-alkynes: Synthesis, reaction chemistry and solid state structures

“…Likewise, complexes 6-10 present a further m C"C band at 2032 (6), 2017 (7), 2070 (8), 2022 (9) and 2015 cm À1 (10), a region typical for metal acetylides, i.e., [AgC"CR] [5,1]. (12,13) Scheme 1. Synthesis of alkyne-stabilized mononuclear silver(I) acetylides 6-10.…”

“…lide PhC"C. The structure analysis of 7 reveals the characteristic features of g 2 -alkyne stabilized group-11 metal species of general type {[Ti](l-r,p-C"CR) 2 }MX ([Ti] = (g 5 -C 5 H 5 ) 2 Ti, (g 5 -C 5 H 4 SiMe 3 ) 2 Ti; M = Cu, Ag, Au; X = mono-dentate inorganic, organic or organometallic ligand) with M in a planar surrounding [5][6][7][11][12][13]. For a more specific discussion of tendencies concerning heterobimetallic organometallic p-tweezer complexes see reference [5].…”

“…For a more specific discussion of tendencies concerning heterobimetallic organometallic p-tweezer complexes see reference [5]. Upon g 2 -coordination of the titanium alkynyl ligands to the low-valent AgC"CPh entity a bond lengthening of the C"C triple bonds from 1.214(6) and 1.203(9) [11] in the non-coordinated tweezer molecule [5,12] to 1.238(3) and 1.234(3) Å in 7 is observed. The bite angle C1-Ti1-C6 is considerably reduced (93.25 (9)°) compared to the analogous angle in [Ti](C"CSiMe 3 ) 2 (102.8(2)°) [5,8a].…”

Organometallic π-Tweezers, NCN Pincers, and Ferrocenes as Molecular “Tinkertoys” in the Synthesis of Multiheterometallic Transition-Metal Complexes

“…The solid-state structures of selected species of types 41 − 44 were determined by X-ray structure analysis . The basic structure [{[M](μ-σ,π-C⋮CR) 2 } 2 M‘] + is set up by two almost orthogonally positioned bis(alkynyl) transition-metal fragments, which are spanned by a d 10 M‘ + ion.…”

“…The solid-state structures of selected species of types 41-44 were determined by X-ray structure analysis. 39 The basic structure [{ [M](µ-σ,π-CtCR) 2 } 2 M′] + is set up by two almost orthogonally positioned bis(alkynyl) transition-metal fragments, which are spanned by a d 10 M′ + ion. Thereby all four RCtC ligands are η 2 -coordinated to M′ + , forming a linear M-M′-M array.…”