Tri-<i>n</i>-butyl(<i>N</i>-maleoyl-β-alaninato)tin

Parvez, M.; Ali, Syed Wajid; Bhatti, Moazzam H.; Khokhar, M. Nawaz; Mazhar, M.; Qureshi, Sajid Iqbal

doi:10.1107/s010827019900743x

Cited by 6 publications

(6 citation statements)

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“…This mode of coordination with exo cyclic tin atoms results in penta coordination, trigonal bi-pyramidal geometry [25]. Such behavior of tetraorganotin(IV) compounds were reported by Pervez et al [6,17,18,21] as centro-symmetric skew trapezoidal bi-pyramidal geometry for the endo-cyclic tin status while the exo-cyclic tin status are in distorted trigonal bi-pyramidal geometry. The 119m Sn Mössbauer spectra displayed quadrupole splitting values over the range of 3.41 mm s À1 , which is greater than the 2.1 mm s À1 value reported in the literature [9,16,29] for a trans octahedral geometry around tin atom of monomer diorganotin dicarboxylate complexes Similarly, Gielen et al [15] reported trans octahedral geometry of monomer type compounds (Fig.…”

Section: Spectral Studies Of Mono-and Dimer Complexesmentioning

confidence: 82%

“…Both asymmetric and symmetric stretching of the phthalimido (C 2 O 2 N) and of the carbonyl (CO) groups and the stretching for Sn-C and Sn-O were exhibited as reported in the literature [16][17][18][19][20][21][22][23]. The asymmetric and symmetric stretching values of CO groups of monomeric as well in dimeric type esters were raised and lowered than the ligand's values and Dm values of compounds were higher than the Dm of ligand.…”

Section: Spectral Studies Of Mono-and Dimer Complexesmentioning

confidence: 89%

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Synthesis of novel bioactive phthalimido-4-methyl pentanoateorganotin(IV) esters with spectroscopic investigation

Ashfaq

2006

Journal of Organometallic Chemistry

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Section: Spectral Studies Of Mono-and Dimer Complexesmentioning

confidence: 82%

Section: Spectral Studies Of Mono-and Dimer Complexesmentioning

confidence: 89%

Synthesis of novel bioactive phthalimido-4-methyl pentanoateorganotin(IV) esters with spectroscopic investigation

Ashfaq

2006

Journal of Organometallic Chemistry

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“…Earlier reports [23][24][25][26] have shown that the coordination of different alkyl groups with O-donor ligands does not change the coordination geometry of triorganotin complexes and they show a polymeric structure with the trigonal bipyramidal geometry. Examples are given in Figs.…”

Section: Five Coordinated Complexesmentioning

confidence: 99%

Structural chemistry of organotin(IV) complexes

Shahzadi

Ali

2008

JICS

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The amazing structural diversity in organotin compounds is discussed in the systems containing -O and -S donor ligands. It is demonstrated that there exist a fascinating range of structural diversity for organotin(IV) complexes, including differences in coordination number and molecular geometry. The difference in structure is correlated with the nature of tin and ligand bonded R groups. Despite the large number of different structures found in organotin(IV) carboxylates, there is limited range of coordination geometries about the Sn atom. The four coordinated Sn atom in triorganotin(IV) complexes is invariably distorted tetrahedral and five coordinated Sn is distorted trigonal bipyramidal. A large range has been observed for diorganotin carboxylate structures, where five, six and seven coordinate geometries have been reported. The Sn atom in mono-organotin has only been demonstrated to exist in distorted octahedral geometries (the single exception being a pentagonal bipyramidal geometry). In the case of organotin(IV) complexes of S donor ligands, it has been shown that there exists a rich diversity in Sn atom geometries and coordination modes of the sulfur donor ligands themselves. As in related carboxylate systems, the assignment of coordination numbers to the Sn centers in some compounds is controversial. As a general trend, it has been shown that, the overall coordination number at the Sn atom decreases with the increasing number of organic substituents at the Sn atom. This phenomenon is usually achieved by increased asymmetry in the mode of coordination of the sulfur donor ligands.

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“…Further organotin(IV) carboxylates of N-protected amino acids have a number of interesting therapeutic applications as anti-tumour agents, etc. [5][6][7][8][9], whereas only one tributyltin(IV) derivative of 3-maleimidopropionic acid has been reported [10]. Literature divulges that little is known about the mode/mechanism of action of such complexes, etc., and requires structural information for better understanding.…”

Section: Introductionmentioning

confidence: 97%