Novel germanium(ii) binaphthoxide complexes: synthesis and crystal structure of (R,R)-[Ge{OC20H10(OSiMe3)-2′-(SiMe3)2-3,3′}2] and (R)-[Ge{O2C20H10(SiMe2Ph)2-3,3′}{NH3}]; catalytic function of Ge[N(SiMe3)2]2 for the mono-silylation of 3,3′-disubstituted-1,1′-bi-2,2′-naphthols

Weinert, Charles S.; Fanwick, Phillip E.; Rothwell, Ian P.

doi:10.1039/b204299a

Cited by 27 publications

(8 citation statements)

References 11 publications

(10 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the isolation and structural characterization of the lead(II) ammine complex Ar*PbBr(NH 3 ) are described. This is the first structural determination of an ammine complex of divalent lead and only the second example of a structurally characterized ammine complex of a divalent group 14 element …”

Section: Introductionmentioning

confidence: 98%

Synthesis and Characterization of Ge(II), Sn(II), and Pb(II) Monoamides with −NH₂ Ligands

et al. 2005

View full text Add to dashboard Cite

The synthesis and characterization of the first divalent germanium, tin, and lead monoamide derivatives of the parent amide group -NH(2) are presented. They have the general formula (ArMNH(2))(2) (M = Ge, Ar = Ar'(C(6)H(3)-2,6-Pr(i)(2)) or Ar* (C(6)H(3)-2,6(C(6)H(2)-2,4,6-Pr(i)(3))); M = Sn, Ar = Ar*; M = Pb, Ar = Ar*). For germanium and tin, they were obtained by reacting the corresponding terphenyl halides of the group 14 elements with liquid ammonia in diethyl ether. The lead amide derivative (Ar*PbNH(2))(2) was synthesized by reaction of LiNH(2) with Ar*PbBr in diethyl ether. The compounds were characterized by IR and multinuclear NMR spectroscopies and by X-ray crystallography in the case of the (Ar'GeNH(2))(2) or (Ar*SnNH(2))(2) derivatives. They possess dimeric structures with two -NH(2) groups bridging the germanium and tin centers. For lead, the reaction with ammonia led to isolation of a stable ammine complex of formula Ar*PbBr(NH(3)) which was characterized by IR and NMR spectroscopies and by X-ray crystallography. It is the first structural characterization of a divalent lead ammine complex.

show abstract

Section: Introductionmentioning

confidence: 98%

Synthesis and Characterization of Ge(II), Sn(II), and Pb(II) Monoamides with −NH₂ Ligands

et al. 2005

View full text Add to dashboard Cite

show abstract

“…This work is being extended to cover a variety of chiral, main group derivatives of this ligand set. Recent publications have dealt with germanium compounds . In this paper we report on the synthesis and structures of a series of aluminum compounds containing the bulky ( S )-3,3‘-bis(triphenylsilyl)-1,1‘-bi-2,2‘-naphthoxide ligand, 1 .…”

Section: Introductionmentioning

confidence: 99%

Isolation and Chemistry of Aluminum Compounds Containing (S)-3,3‘-Bis(triphenylsilyl)-1,1‘-bi-2,2‘-naphthoxide Ligands

et al. 2003

Self Cite

View full text Add to dashboard Cite

The reaction of the resolved, bulky binol (S)-3,3‘-bis(triphenylsilyl)-2,2‘-dihydroxy-1,1‘-binaphthyl, (S)-H2O2C20H10{SiPh3}2-3,3‘ (1), with a variety of alkyl and amide compounds has been investigated. Reaction of 1 with [Al2Me6] initially proceeds only in a 1:1 ratio to produce dinuclear [Al2(O2C20H10{SiPh3}2-3,3‘)(CH3)4], (S)-2. Compound 2 contains a [Al(μ-C)(μ-O)] core, Al−Al = 2.739(2) Å, with the binaphthoxide ligand oxygen atoms occupying terminal and bridging positions. In the presence of pyridine, 2 reacts further with 1 to produce [Al(O2C20H10{SiPh3}2-3,3‘)(CH3)(py)], (S)-4. The ethyl analogue of 4, [Al(O2C20H10{SiPh3}2-3,3‘)(CH3)(py)], (S)-5, was obtained from [Et2AlCl]. Both 4 and 5 were shown to adopt tetrahedral geometries in the solid state with O−Al−O angles of ∼107°. Reaction of [LiAl(NMe2)4] with 1 produced a dinuclear compound, [LiAl(O2C20H10{SiPh3}2-3,3‘)(NHMe2)(NMe2)2], (S)-6, containing a terminal and bridging amido group. The lithium-bound HNMe2 ligand could be substituted by pyridine to produce [LiAl(O2C20H10{SiPh3}2-3,3‘)(NC6H5)(NMe2)2], (S)-7. In the solid state the formally three-coordinated lithium atoms in 6 and 7 are pyramidalized. The sum of the three angles for the LiN2O core is 305° and 322° for 6 and 7, respectively. This is due to an interaction of the lithium with one arene ring of an SiPh3 group. In 6 the carbon atoms involved are an ipso- and ortho-carbon, while for 7 the ortho- and meta-carbon atoms of a Ph−Si ring are in close contact.

show abstract

“…Furthermore, the calculated GeÀN bond of 2.0988 is consistent with that reported for the only structure with a Ge II ÀNH 3 linkage (2.093(4)-2.107(4) ), which was obtained unexpectedly from the decomposition of a Ge II -N(SiMe 3 ) 2 precursor. [42,43] The computational data in Table 1 demonstrate that 4' has a much stronger Ge À E bond than 2', as would be anticipated on the basis of relative basicities of NH 3 and OH 2 . Furthermore, the bonds in the deprotonated models 3 and 5' are considerably stronger than are those of the corresponding dicationic adducts.…”

mentioning

confidence: 67%

Water and Ammonia Complexes of Germanium(II) Dications

et al. 2013

View full text Add to dashboard Cite

on the occasion of his 70th birthday Scheme 1. Synthesis of complex 2[OTf ] 2 .element hydride adducts is a viable approach to new covalently bonded species.We are presently investigating the further reactivity of these remarkable complexes, their organic analogues (that is, alcohols and amines), their heavier congeners, and the deprotonated variants for their potential use in synthetic chemistry (toward unsaturated molecules), catalysis (by OÀH and NÀH activation), [52] and as materials precursors.

show abstract

Novel germanium(ii) binaphthoxide complexes: synthesis and crystal structure of (R,R)-[Ge{OC20H10(OSiMe3)-2′-(SiMe3)2-3,3′}2] and (R)-[Ge{O2C20H10(SiMe2Ph)2-3,3′}{NH3}]; catalytic function of Ge[N(SiMe3)2]2 for the mono-silylation of 3,3′-disubstituted-1,1′-bi-2,2′-naphthols

Cited by 27 publications

References 11 publications

Synthesis and Characterization of Ge(II), Sn(II), and Pb(II) Monoamides with −NH₂ Ligands

Synthesis and Characterization of Ge(II), Sn(II), and Pb(II) Monoamides with −NH₂ Ligands

Isolation and Chemistry of Aluminum Compounds Containing (S)-3,3‘-Bis(triphenylsilyl)-1,1‘-bi-2,2‘-naphthoxide Ligands

Water and Ammonia Complexes of Germanium(II) Dications

Contact Info

Product

Resources

About

Novel germanium(ii) binaphthoxide complexes: synthesis and crystal structure of (R,R)-[Ge{OC20H10(OSiMe3)-2′-(SiMe3)2-3,3′}2] and (R)-[Ge{O2C20H10(SiMe2Ph)2-3,3′}{NH3}]; catalytic function of Ge[N(SiMe3)2]2 for the mono-silylation of 3,3′-disubstituted-1,1′-bi-2,2′-naphthols

Cited by 27 publications

References 11 publications

Synthesis and Characterization of Ge(II), Sn(II), and Pb(II) Monoamides with −NH2 Ligands

Synthesis and Characterization of Ge(II), Sn(II), and Pb(II) Monoamides with −NH2 Ligands

Isolation and Chemistry of Aluminum Compounds Containing (S)-3,3‘-Bis(triphenylsilyl)-1,1‘-bi-2,2‘-naphthoxide Ligands

Water and Ammonia Complexes of Germanium(II) Dications

Contact Info

Product

Resources

About

Synthesis and Characterization of Ge(II), Sn(II), and Pb(II) Monoamides with −NH₂ Ligands

Synthesis and Characterization of Ge(II), Sn(II), and Pb(II) Monoamides with −NH₂ Ligands