title: Reactivity of an amidinato silylene and germylene toward germanium(ii), tin(ii) and lead(ii) halides.
abstract: The coordination chemistry of an amidinato silylene and germylene toward group 14 element(ii) halides is described. The reaction of the amidinato silicon(ii) amide [LSiN(SiMe3)2] (1, L = PhC(NtBu)2) with SnCl2and PbBr2afforded the amidinato silylene-dichlorostannylene and -dibromoplumbylene adducts [L{(Me3Si)2N}SiEX2] (E = Sn, X = Cl (2); E = Pb, X = Br (3)), respectively, in which there is a lone pair of electrons on the Sn(ii) and Pb(ii) atoms. X-ray crystallography, NMR spectroscopy and theoretical studies show conclusively that the Si(ii)-E(ii) bonds are donor-acceptor interactions. Similar electronic structures were found in the amidinato germylene-dichlorogermylene and -dichlorostannylene adducts [L{(Me3Si)2N}GeECl2] (E = Ge (5), Sn (6)), which were prepared by treatment of the amidinato germanium(ii) amide [LGeN(SiMe3)2] (4) with GeCl2·dioxane and SnCl2, respectively.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore. CWSo@ntu.edu.sg.
authors.forename: Yu-Liang
authors.initials: YL
authors.lastname: Shan
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore. CWSo@ntu.edu.sg.
authors.forename: Bi-Xiang
authors.identifier: http://orcid.org/0000-0003-4728-789X
authors.initials: BX
authors.lastname: Leong
authors.affiliation: Singapore Institute of Technology, 10 Dover Drive, 138683, Singapore.
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: Xi
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore. CWSo@ntu.edu.sg.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Ganguly
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore. CWSo@ntu.edu.sg.
authors.forename: Yongxin
authors.initials: Y
authors.lastname: Li
authors.affiliation: Singapore Institute of Technology, 10 Dover Drive, 138683, Singapore.
authors.forename: Kok Hwa
authors.initials: KH
authors.lastname: Lim
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore. CWSo@ntu.edu.sg.
authors.forename: Cheuk-Wai
authors.identifier: http://orcid.org/0000-0003-4816-9801
authors.initials: CW
authors.lastname: So