Novel Stannylenes Stabilized with Diethylenetriamido and ­Related Amido Ligands: Synthesis, Structure, and Chemical Properties

Abstract

Complexes of divalent tin 7–12 with diethylenetriamines 1–3 and related ligands 4–6 were prepared from Lappert's stannylene, Sn[N(SiMe3)2]2, and the corresponding ligands. Reactivity of the stannylenes in insertion, oxidation and [1+4] cycloaddition reactions were studied. Composition and structures of the products were confirmed by elemental analyses and multinuclear (1H, 13C, 19F, and 119Sn) NMR spectroscopy. Crystal structures of the diethylenetriamines 1, 2, stannylenes 7, 8 and the product of the reaction of stannylene 8 with an azide, which contains an eight‐membered (SnNPO)2 ring, were determined by X‐ray diffraction study.

Crystal structure of 2,6-bis(2-hydroxy-5-methylphenyl)-4-phenylpyridinium bromide dichloromethane hemisolvate hemihydrate

“…For general background to the chemistry affording 2,6-bis-(2hydroxyphenyl)pyridines, see: Huang et al (2012Huang et al ( , 2013; Kireenko et al (2013); Klein et al (2010); Li et al (2000); Steinhauser et al (2004); Zhang et al (2006). For the closely related structure of the parent derivative compound, see: Silva et al (1997) Symmetry codes: (i) Àx þ 1; y þ 1 2 ; Àz þ 1 2 ; (ii) Àx þ 1; y À 1 2 ; Àz þ 1 2 .…”

“…Interest in dianionic tridentate ONO-type ligands has grown steadily over the past several decades due to their ability to stabilize unusual metal oxidation states and the coordination geometry around metal centers. As a part of our investigation on the synthesis of tridentate ligands (Kireenko et al, 2013;Huang et al, 2013Huang et al, , 2012 we obtained and studied the structure of the title compound, 2(C 25 H 22 NO 2 + ) . 2Br -.…”

Crystal structure of 4,8-di-tert-butyl-6,6-dichloro-13-ethyl-2,10-dimethyl-13,14-dihydro-12H-dibenzo[d,i][1,3,7,2]dioxazasilecine toluene 0.25-solvate

“…For hypervalent silicon compounds, see: Holmes (1996); Rendler & Oestreich (2005); Selina et al (2006). The title compound was obtained as part of our study of the ability of different types of tridentate ligands to stabilize 'heavier carbenes', see: Huang et al (2012Huang et al ( , 2013; Data collection: APEX2 (Bruker, 2008); cell refinement: SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.…”

Crystal structure of a mixed-valence μ-oxide Sn12cluster

“…For general background to the chemistry of stannylene complexes with transition metals, see: Baumgartner & Marschner (2014); Lee & Sekiguchi (2010). For our previous work on heavy carbene analogs, see: Kireenko et al (2012Kireenko et al ( , 2013; Huang et al (2012Huang et al ( , 2013 2= 95.014 (2) = 110.605 (2) V = 4403.5 (8) Å 3 Z = 1 Mo K radiation = 1.88 mm À1 T = 173 K 0.25 Â 0.10 Â 0.08 mm Table 1 Hydrogen-bond geometry (Å , ). Data collection: APEX2 (Bruker, 2008); cell refinement: SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.…”

“…containing ligands (Kireenko et al, 2012(Kireenko et al, , 2013Huang et al, 2012Huang et al, , 2013.…”