Tetravalent Group 14 Derivatives of a Bulky Aminocarbazole
نویسندگان
چکیده
Stepwise metalation and metathesis reactions with a bulky aminocarbazole were conducted to prepare derivatives of tetravalent group 14 elements. These regarded as putatively suitable precursors for the formation doubly bonded 14/group 15 molecules such imino species. Starting from an N-aminocarbazole, deprotonation benzyl potassium formed corresponding solvent-free dimeric amide. Metathesis EBr4 (E=Si, Ge, Sn) afforded RN(H)EBr3. Deprotonation RN(SiMe3)H monomeric amide RN(SiMe3)K which was then treated SiCl4, GeBr4 SnI4. Both obtained series compounds, RN(H)EBr3 RN(SiMe3)EX3, characterized by multinuclear NMR spectroscopy SCXRD studies.
منابع مشابه
Extremely bulky amido-group 14 element chloride complexes: potential synthons for low oxidation state main group chemistry.
The preparation of a series of extremely bulky secondary amines, Ar*N(H)SiR(3) (Ar* = C(6)H(2){C(H)Ph(2)}(2)Me-2,6,4; R(3) = Me(3), MePh(2) or Ph(3)) is described. Their deprotonation with either LiBu(n), NaH or KH yields alkali metal amide complexes, several monomeric examples of which, [Li(L){N(SiMe(3))(Ar*)}] (L = OEt(2) or THF), [Na(THF)(3){N(SiMe(3))(Ar*)}] and [K(OEt(2)){N(SiPh(3))(Ar*)],...
متن کاملSynthesis and structural characterization of two-coordinate low-valent 14-group metal complexes bearing bulky bis(amido)silane ligands.
A series of germylene, stannylene and plumbylene complexes [η(2)(N,N)-Me(2)Si(DippN)(2)Ge:] (3a), [η(2)(N,N)-Ph(2)Si(DippN)(2)Ge:] (3b), [η(2)(N,N)-Me(2)Si(DippN)(2)Sn:] (4), [η(2)(N,N)-Me(2)Si(DippN)(2)Pb:](2) (5a), and [η(2)(N,N)-Ph(2)Si(DippN)(2)Pb:] (5b) (Dipp = 2,6-iPr(2)C(6)H(3)) bearing bulky bis(amido)silane ligands were readily prepared either by the transamination of M[N(SiMe(3))(2)](...
متن کاملBinding and functional properties of concanavalin A and its derivatives. I. Monovalent, divalent, and tetravalent derivatives stable at physiological pH.
The binding of concanavalin A to various structures via hydrophobic interactions has been studied using a variety of physicochemical assays. It was found that concanavalin A binds to nonpolar compounds such as the plant auxin beta-indoleacetic acid and its structural analogue tryptophan and that this binding is independent of the saccharide-binding activity normally associated with the lectin. ...
متن کاملTetravalent Graphs Admitting Half-Transitive Group Actions: Alternating Cycles
In this paper we study finite, connected, 4-valent graphs X which admit an action of a group G which is transitive on vertices and edges, but not transitive on the arcs of X. Such a graph X is said to be (G, 1 2)-transitive. The group G induces an orientation of the edges of X, and a certain class of cycles of X (called alternating cycles) determined by the group G is identified as having an im...
متن کاملExtremely bulky amide ligands in main group chemistry.
The search for extremely sterically demanding monodentate amide ligands to access main group complexes in low-coordination numbers and highly reactive bonding modes is an area of intense research interest. The recent development of three classes of sterically demanding, monodentate amide ligands - the m-terphenyl anilides [N(R){C6H3Ar2-2,6}](-) (Ar = aryl, R = H, methyl, silyl), substituted car...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: European Journal of Inorganic Chemistry
سال: 2021
ISSN: ['1434-1948', '1099-0682']
DOI: https://doi.org/10.1002/ejic.202001002