Reactivity of di-n-butyl-dicyclopentadienylzirconium towards amido stabilized stannylenes

C,N-chelated hexaorganodistannanes, and triorganotin(IV) hydrides and cyclopentadienides

“…The sum of the interatomic angles C-Sn-C (318.1°), is extremely small, being 328.5°for an ideal tetrahedral configuration of the tin atom. The Sn-Sn bond distance of 2.8014(13) Å is relatively short and of the same order as the Sn-Sn distance in Me 6 Sn 2 (2.78 Å) in the vapor phase, as found by gas electron diffraction, 2.763(2) Å for Ph 6 Sn 2 [28] and the Sn-Sn distance (2.804(4) Å) recently observed in our group for a distannane coordinated by zirconocene [29]. The nitrogen atom is primarily not involved in the tin atom coordination sphere, given the long Sn1-N11 bond (3.106(13) Å), even though this distance is much smaller than the sum of the Van der Waals radii.…”

Hydrolysis of organometallic and metal–amide precursors: synthesis routes to oxo-bridged heterometallic complexes, metal-oxo clusters and metal oxide nanoparticles

“…96 While a vast amount of research has focused on the conversion of M−OR groups to M−O−M' units, this topic has been extensively covered in other reviews and will not be discussed in detail here. 118,69 Other successful yet less widely-developed strategies to form oxobridged heterometallic complexes include C−H deprotonation to yield zwitterionic complexes; 119, 120 oxidation of heterometallic precursors; 121,122 use of a heterometallic reagent to encapsulate oxo dianions from air or ethereal solvents; [123][124][125] or adduct formation from a donor M=O functionality to a Lewis acidic metal centre. 126 Here we shall focus on the well-established and versatile dealkylation or deamination routes from organometallic/metal-amide precursors.…”

Complete Hydrogen Transfer: Tin Hydride Reactivity toward Adamantylisonitrile and Benzonitrile

“…In comparison to azastanniridine 2 , the Sn–N distance in 5 is substantially shorter [ 5 : 2.044(2) Å; 2 : 2.326(2) Å]. The Sn–N distance of 2.044(2) Å in amidostannylene 5 is only slightly shorter than the Sn–N distances found in bisamidostannylenes [2.102(6)–2.063(2) Å]. ,− The sum of angles around the nitrogen atom of 5 of 360° indicates trigonal planar coordination with the electron pair donated into the empty p-orbital of the tin atom.…”