2007
DOI: 10.1016/j.jorganchem.2007.09.013
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Static and dynamic disorder in organotin compounds: A bis(amido)stannylene coordinated by N,N′-diisopropyl-1,8-diamidonaphthalene

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Cited by 4 publications
(3 citation statements)
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“…The 119 Sn Mößbauer spectrum of 1 TMS Sn is typical of an N‐heterocyclic stannylene. The spectrum exhibits a doublet (quadrupole splitting (Δ E Q ) of 2.49(1) mm s −1 ) with an isomer shift ( δ ) of 2.79(1) mm s −1 at 5 K. These data compare well with those reported for other N‐heterocyclic stannylenes, such as [CH 2 (CH 2 NDipp) 2 ]Sn ( δ =2.17 mm s −1 , Δ E Q =2.28 mm s −1 ), (CH 2 NDipp) 2 Sn ( δ =2.27 mm s −1 , Δ E Q =2.46 mm s −1 ), [Nap(N i Pr) 2 ]Sn ( δ =2.91 mm s −1 , Δ E Q =2.81 mm s −1 ), [CH 2 N(SiMe 3 )] 2 Sn ( δ =2.66 mm s −1 , Δ E Q =2.50 mm s −1 ), and CH 2 [CH 2 N(SiMe 3 )] 2 Sn ( δ =2.67 mm s −1 , Δ E Q =2.24 mm s −1 ) . The isomer shift is clearly indicative of divalent tin and the quadrupole splitting results from the asymmetric coordination along with the lone‐pair character of the tin(II) species.…”
Section: Resultssupporting
confidence: 82%
“…The 119 Sn Mößbauer spectrum of 1 TMS Sn is typical of an N‐heterocyclic stannylene. The spectrum exhibits a doublet (quadrupole splitting (Δ E Q ) of 2.49(1) mm s −1 ) with an isomer shift ( δ ) of 2.79(1) mm s −1 at 5 K. These data compare well with those reported for other N‐heterocyclic stannylenes, such as [CH 2 (CH 2 NDipp) 2 ]Sn ( δ =2.17 mm s −1 , Δ E Q =2.28 mm s −1 ), (CH 2 NDipp) 2 Sn ( δ =2.27 mm s −1 , Δ E Q =2.46 mm s −1 ), [Nap(N i Pr) 2 ]Sn ( δ =2.91 mm s −1 , Δ E Q =2.81 mm s −1 ), [CH 2 N(SiMe 3 )] 2 Sn ( δ =2.66 mm s −1 , Δ E Q =2.50 mm s −1 ), and CH 2 [CH 2 N(SiMe 3 )] 2 Sn ( δ =2.67 mm s −1 , Δ E Q =2.24 mm s −1 ) . The isomer shift is clearly indicative of divalent tin and the quadrupole splitting results from the asymmetric coordination along with the lone‐pair character of the tin(II) species.…”
Section: Resultssupporting
confidence: 82%
“…This species yields a well-defined doublet resonance centered at an isomer shift value of 3.062(8) mm s –1 (Figure ). This value is very close to that observed in the bis(amido)naphthylstannylene :Sn[( i PrN) 2 C 10 H 6 ] (C 10 H 6 = 1,8-naphthyl) [2.913(3) mm s –1 ], adding support for the presence of a Sn(II) site with a nonbonding lone pair in 1 . The structurally related three-coordinate Sn(II) adduct IPr·SnCl(NHDipp) ( 11 ) was also studied by Mössbauer spectroscopy and yields a slightly lower IS value of 2.809(8) mm s –1 relative to 1 .…”
Section: Resultssupporting
confidence: 78%
“…As has been noted earlier [4,7a,15], the evaluation of the rmsav of the metal atom in organometallics can be based on the U i,j values extracted from single crystal X-ray diffraction data on the one hand, and the recoil-free fraction data based on temperature dependent ME data, on the other, and in general the agreement is reasonably satisfactory except in cases where significant bond flexibility ligating the metal atom to the rest of the structure has been demonstrated as in the case of some organo-tin compounds [16,17]. In the present case, the good agreement between the Xray and ME data for 1 and 2 noted above ( Figs.…”
Section: Metal Atom Dynamical Inferencesmentioning
confidence: 87%