Structure and reactivity of monomeric, molecular Tin(II) compounds

Insights into the Intramolecular Donor Stabilisation of Organostannylene Palladium and Platinum Complexes: Syntheses, Structures and DFT Calculations

“…The complexes are yellow (1,4,6) or red (2, 3, 5, 7) crystal- www.chemeurj.org line solids and are readily soluble in common organic solvents such as toluene, dichloromethane and THF, but poorly soluble in n-hexane. Complex 8 is a deep-red crystalline solid that is only poorly soluble in toluene but readily soluble in dichloromethane.…”

“…The PdÀSn distances vary between 2.464(1) (Pd1 À Sn2, 2·C 7 H 8 ) and 2.5138(9) (Pd1 À Sn1, 5) and the Pt À Sn distances vary between 2.469(1) (Pt1 À Sn1, 4·C 7 H 8 ) and 2.4865(4) (6). [50] The Sn(1) and Sn (2) atoms are pentacoordinated and each show a strongly distorted trigonal-bipyramidal environment with C(1)/C(11), X(1)/X (2) (1,2,4), and N(1) and N(2) (5, 6) occupying the axial positions. [25, 26, 44, 45l, 46, 47, 49] Interestingly, the PdÀSn distances are somewhat shorter than the distances given by Pyykkç and Atsumi for single PdÀSn bonds (2.6 ).…”

“…The complexes are yellow (1,4,6) Table 1 and Table 2, those of 8 are given in the caption to Figure 6.…”

“…[25, 26, 44, 45l, 46, 47, 49] Interestingly, the PdÀSn distances are somewhat shorter than the distances given by Pyykkç and Atsumi for single PdÀSn bonds (2.6 ). [50] The Sn(1) and Sn(2) atoms are pentacoordinated and each show a strongly distorted trigonal-bipyramidal environment with C(1)/C(11), X(1)/X(2) and M(1) (1, X= Cl, M = Pd; 2, X= Br, M = Pd; 3, X= I, M = Pd; 4, X= Cl, M = Pt; 5, X = I, M = Pd; 6, X= Cl, M = Pt) occupying the equatorial positions and the oxygen and nitrogen atoms O(1) and O(2) (1-4), O(3) and O(4) (1,2,4), and N(1) and N(2) (5, 6) occupying the axial positions. The distortion from the ideal geometry is especially manifested by the equatorial angles, which vary between 94.75(8) (C(1)-Sn(1)-Cl(1), 3) and 138.6(1)8 (C(1)-Sn(1)-Pt(1), 6), and the axial angles, which vary between 147.8(2) (N(1)-Sn(1)-N(2), 5) and 157.1(2)8 (O(3)-Sn(2)-O(4), 2).…”

“…Most of these complexes contain stannylene ligands bearing bulky substituents, for example, (Me 3 Si) 2 N, [28,29] Abstract: The syntheses of the transition metal complexes cis-[(4-tBu-2,6-{P(O)A C H T U N G T R E N N U N G (OiPr) 2 } 2 C 6 H 2 SnCl) 2 The compounds were characterised by elemental analyses, 1 H, 13 C, 31 P, 119 Sn and 195 Pt NMR spectroscopy, singlecrystal X-ray diffraction analysis, UV/ Vis spectroscopy and, in the cases of compounds 1, 3 and 4, also by Mçss-A C H T U N G T R E N N U N G bauer spectroscopy. All the compounds show the tin atoms in a distorted trigonal-bipyramidal environment.…”