New cyclopentadienylzirconium(IV) complexes of N-phthaloyl amino acids

Saxena, Anil Kumar; Saxena, Sanjiv; Audhesh, K.

doi:10.1007/bf03325406

Cited by 10 publications

(12 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…"9 Sn NMR data of Some Diorganotin(lV) Complexes Derived from Heterocyclic ß-Diketones and N-Sn NMR chemical shifts have been found to be influenced by the coordination number of the tin atom /46/. " The "9 Sn chemical shift values are consistent with the earlier reported /47/ values for hexacoordinated diorganotin (IV) complexes. The "9 Sn chemical shift values are consistent with the earlier reported /47/ values for hexacoordinated diorganotin (IV) complexes.…”

supporting

confidence: 83%

See 1 more Smart Citation

Synthetic Pathway, Structural Chemistry and Structural Elucidation Based Upon Spectral Studies [IR, NMR (1Η, 13C and 119Sn)] of Some Mixed Ligand Complexes of Diorganotin (IV) Derived from Sterically Demanding Heterocyclic ß-Diketones and N-Protected Amino Acids.

Joshi¹,

Verma²,

Jain³

et al. 2004

Main Group Metal Chemistry

View full text Add to dashboard Cite

A series of new mixed ligand diorganotin (IV) complexes of general formula Bu 2 SnLA [where LH = RCOC:C(OH)N(C 6 H 5 )N:CCH 3 ; R = -C 6 H 5 , -C 2 H S , -CH, and AH = C(0)C 6 H 4 C(0)NCH R'COOH; R' = -H, -CH,, -CH(CH,) 2 , -CH 2 C 6 H 5 , -CHR' = -CH 2 CH 2 -was synthesized by the interaction of dibutyltin (IV) dichloride with the corresponding ligands in the presence of triethylamine in 1:1:1:2 molar ratios in dry refluxing benzene solution. The plausible structures of these newly synthesized complexes have been proposed on the basis of physico-chemical and spectral studies. The central tin atom is bonded by heterocyclic ß-diketone and N-protected amino acid ligands. The ll9 Sn NMR spectral studies of some of these complexes reveal the presence of hexacoordinated tin centres in these complexes.

show abstract

supporting

confidence: 83%

mentioning

confidence: 90%

Synthetic Pathway, Structural Chemistry and Structural Elucidation Based Upon Spectral Studies [IR, NMR (1Η, 13C and 119Sn)] of Some Mixed Ligand Complexes of Diorganotin (IV) Derived from Sterically Demanding Heterocyclic ß-Diketones and N-Protected Amino Acids.

Joshi¹,

Verma²,

Jain³

et al. 2004

Main Group Metal Chemistry

View full text Add to dashboard Cite

show abstract

“…However, complex (20) shows bands at 495 and 550 nm ( Table 4, deposited in the ESI) assigned to 4 T 1g → 4 T 1g (P) and 4 T 1g → 4 T 2g transitions characteristic of a high-spin square planar geometry around the Co(ІІ) ion. 36 The Cu(ІІ) complexes (3), (15) and (25) show bands at 460, 560 and 625 nm, 485, 595 and 650 nm, and 495, 535 and 635 nm respectively. The first band is assigned to ligand→copper charge transfer and the other bands to 2 B 1g → 2 E g and 2 B 1g → 2 B 2g transitions, indicating a distorted octahedral structure.…”

Section: Esr Measurementsmentioning

confidence: 98%

Synthesis of Novel Metal Complexes with Isonicotinoyl Hydrazide and their Antibacterial Activity

El‐Tabl

El-Bahnasawy

Shakdofa

et al. 2010

Journal of Chemical Research

View full text Add to dashboard Cite

A new series of Mn(II), Co(II), Ni(II), Cu(II), Fe(III), Zn(II), Cd(II), Zr(IV) and Ag(I) complexes of 1-(2-phenylhydrazone propane-2-ylidene) isonicotinoylhydrazide ( 1) have been prepared and characterised. The complexes are non electrolytes and the ESR spectra of the solid complexes [Cu(1) 2 (OAc) 2 ].3H 2 O, (3), [CuCl 2 (1)].0.5H 2 O, (8), [Mn(1) 2 (OAc) 2 ].H 2 O, (5) and [MnCl 2 (1) 2 ].2H 2 O, (11) are isotropic, whereas those of [Co(1) 2 (OAc) 2 ].3H 2 O, (4) and [Co(1)(NO 3 ) 2 ].1.5H 2 O, ( 20) are non-axial and axial in type. Antibacterial studies show that the metal complexes exhibit a greater inhibitory effect than (1).

show abstract

“…6 2.20 -2.35 (due to the CH3 group) in all com plexes while a multiplet appears at ca. Such a splitting has also been observed [15] in cyclopentadienyl zirconium complexes with N-phthaloyl amino acids and is probably due to a monomer/ dimer equilibrium. The absence of a signal at 6 9.2 -9.8 attributed to the OH proton of free carboxylic acids from the spectra of the corresponding hafnium complexes indicates the deprotonation of the func tional group.…”

Section: H Nmr Spectramentioning

confidence: 82%

Mono-and Bis(cyclopentadienyl)hafnium(IV) Derivatives with Higher Fatty Acids

Pandey

Sengupta

Baranwal

et al. 2001

Zeitschrift Für Naturforschung B

View full text Add to dashboard Cite

Cyclopentadienyl, Hafnium(IV), Fatty Acids The reactions o f Cp2HfCh with som e higher monocarboxylic acids having straight chains, caprylic (C8H16O2), lauric (C12H24O2), myristic (C14H28O2), palmitic (C16H32O2), stearic (C18H36O2), and behenic (C22H44O2) acid, have been studied in anhydrous tetrahydrofuran in 1:1 and 1:2 molar ratios, respectively. The reaction products isolated, o f types Cp2Hf(L)Cl, CpHf(L)2Cl (LH represents different carboxylic acids), have been characterised by conductivity and magnetic susceptibility measurements and spectral (infrared, electronic, *H NMR and 13C NMR) data. The bonding o f the carboxylato ligand in these complexes has been discussed and plausible structures have been established.

show abstract

New cyclopentadienylzirconium(IV) complexes of N-phthaloyl amino acids

Cited by 10 publications

References 11 publications

Synthetic Pathway, Structural Chemistry and Structural Elucidation Based Upon Spectral Studies [IR, NMR (1Η, 13C and 119Sn)] of Some Mixed Ligand Complexes of Diorganotin (IV) Derived from Sterically Demanding Heterocyclic ß-Diketones and N-Protected Amino Acids.

Synthetic Pathway, Structural Chemistry and Structural Elucidation Based Upon Spectral Studies [IR, NMR (1Η, 13C and 119Sn)] of Some Mixed Ligand Complexes of Diorganotin (IV) Derived from Sterically Demanding Heterocyclic ß-Diketones and N-Protected Amino Acids.

Synthesis of Novel Metal Complexes with Isonicotinoyl Hydrazide and their Antibacterial Activity

Mono-and Bis(cyclopentadienyl)hafnium(IV) Derivatives with Higher Fatty Acids

Contact Info

Product

Resources

About