Bis(1,3-diphenylpropane-1,3-dionato)tin(II)

Uchida, Tsutomu; Kozawa, Kozo; Obara, Heitaro

doi:10.1107/s0567740877010632

Cited by 14 publications

(17 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interatomic N–Sn (∼2.22 Å) distances, C NCN –Sn contacts (2.68 Å), and N1–C1–N2 angles (110.92(16)°) are practically the same if compared to tin(IV) amidinates 2 – 7 . The values of interatomic O–Sn (∼2.22 Å) distances and O–Sn–O angles (77.91(5)°) in 10 are comparable to tin(II) guanidinato-dionate and tin(II) bis(1,3-trifluoromethan)-1,3-dionate (∼2.25 Å, ∼77.8°) as well as tin(II) bis(1,3-diphenylpropan-1,3-dionate) (∼2.2 Å, ∼78.2°) …”

Section: Results and Discussionmentioning

confidence: 77%

“…The interatomic Sn−Cl distances (2.4134 (6) and 2.3981 (6) The structure of stannylene 10 ( Figure 5) with a fourcoordinated tin atom has a disordered tetragonal pyramidal geometry with the lone electron pair of the tin(II) atom situated perpendicularly to the base formed by two donor nitrogen N1 and N2 and oxygen O1 and O2 atoms (analogous to tin(II) guanidinato-dionate 12 as tin(II) bis(1,3-diphenylpropan-1,3-dionate) (∼2.2 Å, ∼78.2°). 24 UV−vis Absorption and Computational DFT Studies. The UV−vis spectra of tin(IV) amidinato-diolates 2−6 as well as acenaphthenequinone were recorded in dried CH 2 Cl 2 at 295 K under an inert argon atmosphere in the range of wavelengths of 250−800 nm in order of disclose the color change (nontypical for stannanes) with respect to the starting components.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The presence of hexa-coordinated tin atoms, as a centerpiece in the spirocyclic motives, in disordered pseudooctahedral geometry were observed in the case of molecular structures of tin(IV) amidinato-diolates 2−6 (see Figures 2 and 3 as tin(II) bis(1,3-diphenylpropan-1,3-dionate) (∼2.2 Å, ∼78.2°). 24 UV−vis Absorption and Computational DFT Studies. The UV−vis spectra of tin(IV) amidinato-diolates 2−6 as well as acenaphthenequinone were recorded in dried CH 2 Cl 2 at 295 K under an inert argon atmosphere in the range of wavelengths of 250−800 nm in order of disclose the color change (nontypical for stannanes) with respect to the starting components.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Oxidative Additions of Homoleptic Tin(II) Amidinate

et al. 2015

View full text Add to dashboard Cite

Seven tin(IV) amidinates were prepared and isolated from the reactions of tin(II) bisamidinate [Cy− NC(nBu)N−Cy] 2 Sn with a series of various 1,2-diones ((4 + 1) oxidative cycloaddition mechanism) and chlorine/oxygen molecules, respectively. The ligand substitution effect of (non)symmetric 1,3-diones to starting stannylene as well as intermolecular CO 2 activation via prepared dimeric stannoxane is also reported. All the prepared tin containing compounds as well as ligand substitution reactions were investigated by the multinuclear NMR ( 1 H, 13 C, and 119 Sn) spectroscopic techniques. Molecular structures of one tin(II) and seven tin(IV) amidinates investigated were determined by X-ray diffractions and also evaluated by DFT methods. The UV−vis absorption spectra of all desired colored tin(IV) diolates and its diketo precursors were recorded and simulated by TD-DFT methods.

show abstract

Section: Results and Discussionmentioning

confidence: 77%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Oxidative Additions of Homoleptic Tin(II) Amidinate

et al. 2015

View full text Add to dashboard Cite

show abstract

“…20 13) and 2.3047(12) Å; 78.02(5)°) are close to related values for bis(1,3-trifluoromethane)-1,3-dionatotin(II) (2.348(7), 2.178(6), 2.343(6), and 2.166(6) Å; 78.0(2)°and 77.7(2)°) 22 and bis(1,3-diphenylpropane-1,3-dionatotin(II) (2.344(5), 2.167(6), 2.151(6), and 2.264(5) Å; 78.27 (14)°and 78.28(11)°). 23…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The C1−Sn1 (2.7231(19) Å) and N−Sn distances (2.2030(17), 2.3182(16) Å) and N1−C1−N2 angle (111.66(17)°) are comparable to the corresponding parameters found for 1. Characteristic structural data describing the dionato Ph−CO−CH−CO−CF 3 ligand in 8 show that the O−Sn distances and O−Sn−O angle (2.1741(13) and 2.3047(12) Å; 78.02(5)°) are close to related values for bis(1,3-trifluoromethane)-1,3-dionatotin(II) (2.348(7), 2.178(6), 2.343(6), and 2.166(6) Å; 78.0(2)°and 77.7(2)°)22 and bis(1,3-diphenylpropane-1,3-dionatotin(II) (2.344(5), 2.167(6), 2.151(6), and 2.264(5) Å; 78.27(14)°and 78.28(11)°) 23. …”

mentioning

confidence: 99%

Reactivity of Tin(II) Guanidinate with 1,2- and 1,3-Diones: Oxidative Cycloaddition or Ligand Substitution ?

et al. 2014

View full text Add to dashboard Cite

A series of tin(IV) guanidinates were prepared by a (4+1) oxidative cycloaddition of four 1,2-diones (3,5-di-tertbutyl-o-benzoquinone, 3,4,5,6-tetrachloro-1,2-benzoquinone, 9,10-phenanthrenedione, 1,2-diphenylethanedione) or by an oxidative addition of a C−Br bond (from 2-bromo-1,3-diphenylpropane-1,3-dione followed by rearrangement) and a Cl−Cl bond (Cl 2 generated from (dichloro-λ 3 -iodanyl)benzene) with {pTol-NC[N(SiMe 3 ) 2 ]N-pTol} 2 Sn (1). The reactivity of five pentane-1,3-diones and dimethyl malonate with compound 1 was assessed on the basis of the effect of 1,3-diones on the reaction mechanism in comparison with 1,2-diones. In contrast with oxidation reactions observed for compounds containing conjugated CO bonds, the reactions of the tin(II) guanidinate with 1,3-diones revealed a high ability for ligand substitution. All the tin compounds prepared were characterized, and ligand substitution reactions were monitored using 1 H, 13 C, and 119 Sn NMR spectroscopy. The molecular structures of one tin(II) and five tin(IV) guanidinato complexes investigated were determined by Xray diffraction. All tin(IV) compounds display six-or seven-coordination. The UV−vis absorption spectra were recorded and simulated by TDDFT methods in order to get insight into the origin of the nontypical colors of the target tin(IV) diolatoguanidinates and their keto-functionalized precursors.

show abstract