Tellurium(0) as a ligand: Synthesis and characterization of 2-pyridyltellurolates of platinum(II) and structures of [Pt{2-Te-3-(R)C 5H3N}2Te(PR′3)] (R = H or Me)

Rohit Singh Chauhan, G. Kedarnath, Amey Wadawale, Alvaro Muñoz-Castro, Ramiro Arratia-Perez, Vimal K. Jain, Wolfgang Kaim

Resultado de la investigación: Article

27 Citas (Scopus)

Resumen

Treatment of toluene solutions of the ditellurides [Te2{C 5H3N(R)-3}2] (R = H or Me) with [Pt(PPh 3)4] yielded two types of complexes, [Pt{2-Te-3-(R)C 5H3N}2(PPh3)2] (1a-d) as the major products and [Pt{2-Te-3-(R)C5H3N} 2Te(PPh3)] (2a-d) as minor products. The above complexes can also be obtained by the reaction of [PtCl2(PR′3) 2] (PR′3 = PPh3 or PPh 2(2-C5H4N)) with 2 equiv of Na(2-Te-C 5H3R). The complexes were characterized by elemental analyses and UV-vis, NMR (1H and 31P), and (in part) XPS spectroscopy. The molecular structures of [Pt(2-Te-C5H 4N)2Te(PPh3)] (2a) and [Pt{2-Te-C 5H3(Me)N}2Te(PPh3)] (2b) were established by single crystal X-ray diffraction. Both complexes exhibit a distorted square-planar configuration at the platinum(II) centers. The two mutually trans positioned 2-pyridinetellurolate ligands [2-Te-C 5H3(R)N] coordinate to the central platinum atom in a monodentate fashion through the tellurium atoms. The tellurium(0) atom adopts a "bent T" configuration as it is bridging the 2-Te- C5H 3(R)N molecules via N-Te-N bonds (166° angle) and coordinates to PtII in the trans position to PPh3. The novel bis(pyridine)tellurium(0) arrangement resembles the bis(pyridine)iodonium structure. The calculated NICS indices and ELF functions clearly show that the compounds 2a and 2b are aromatic in the region defined by the Te-C-N-Te-Pt five-membered rings.

Idioma originalEnglish
Páginas (desde-hasta)4179-4185
Número de páginas7
PublicaciónInorganic Chemistry
Volumen49
N.º9
DOI
EstadoPublished - 3 may 2010

Huella dactilar

Tellurium
tellurium
Platinum
platinum
Ligands
Atoms
ligands
pyridines
synthesis
atoms
Toluene
products
configurations
Molecular structure
toluene
molecular structure
X ray photoelectron spectroscopy
Nuclear magnetic resonance
Single crystals
Spectroscopy

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Citar esto

Chauhan, Rohit Singh ; Kedarnath, G. ; Wadawale, Amey ; Muñoz-Castro, Alvaro ; Arratia-Perez, Ramiro ; Jain, Vimal K. ; Kaim, Wolfgang. / Tellurium(0) as a ligand : Synthesis and characterization of 2-pyridyltellurolates of platinum(II) and structures of [Pt{2-Te-3-(R)C 5H3N}2Te(PR′3)] (R = H or Me). En: Inorganic Chemistry. 2010 ; Vol. 49, N.º 9. pp. 4179-4185.
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title = "Tellurium(0) as a ligand: Synthesis and characterization of 2-pyridyltellurolates of platinum(II) and structures of [Pt{2-Te-3-(R)C 5H3N}2Te(PR′3)] (R = H or Me)",
abstract = "Treatment of toluene solutions of the ditellurides [Te2{C 5H3N(R)-3}2] (R = H or Me) with [Pt(PPh 3)4] yielded two types of complexes, [Pt{2-Te-3-(R)C 5H3N}2(PPh3)2] (1a-d) as the major products and [Pt{2-Te-3-(R)C5H3N} 2Te(PPh3)] (2a-d) as minor products. The above complexes can also be obtained by the reaction of [PtCl2(PR′3) 2] (PR′3 = PPh3 or PPh 2(2-C5H4N)) with 2 equiv of Na(2-Te-C 5H3R). The complexes were characterized by elemental analyses and UV-vis, NMR (1H and 31P), and (in part) XPS spectroscopy. The molecular structures of [Pt(2-Te-C5H 4N)2Te(PPh3)] (2a) and [Pt{2-Te-C 5H3(Me)N}2Te(PPh3)] (2b) were established by single crystal X-ray diffraction. Both complexes exhibit a distorted square-planar configuration at the platinum(II) centers. The two mutually trans positioned 2-pyridinetellurolate ligands [2-Te-C 5H3(R)N] coordinate to the central platinum atom in a monodentate fashion through the tellurium atoms. The tellurium(0) atom adopts a {"}bent T{"} configuration as it is bridging the 2-Te- C5H 3(R)N molecules via N-Te-N bonds (166° angle) and coordinates to PtII in the trans position to PPh3. The novel bis(pyridine)tellurium(0) arrangement resembles the bis(pyridine)iodonium structure. The calculated NICS indices and ELF functions clearly show that the compounds 2a and 2b are aromatic in the region defined by the Te-C-N-Te-Pt five-membered rings.",
author = "Chauhan, {Rohit Singh} and G. Kedarnath and Amey Wadawale and Alvaro Mu{\~n}oz-Castro and Ramiro Arratia-Perez and Jain, {Vimal K.} and Wolfgang Kaim",
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Tellurium(0) as a ligand : Synthesis and characterization of 2-pyridyltellurolates of platinum(II) and structures of [Pt{2-Te-3-(R)C 5H3N}2Te(PR′3)] (R = H or Me). / Chauhan, Rohit Singh; Kedarnath, G.; Wadawale, Amey; Muñoz-Castro, Alvaro; Arratia-Perez, Ramiro; Jain, Vimal K.; Kaim, Wolfgang.

En: Inorganic Chemistry, Vol. 49, N.º 9, 03.05.2010, p. 4179-4185.

Resultado de la investigación: Article

TY - JOUR

T1 - Tellurium(0) as a ligand

T2 - Synthesis and characterization of 2-pyridyltellurolates of platinum(II) and structures of [Pt{2-Te-3-(R)C 5H3N}2Te(PR′3)] (R = H or Me)

AU - Chauhan, Rohit Singh

AU - Kedarnath, G.

AU - Wadawale, Amey

AU - Muñoz-Castro, Alvaro

AU - Arratia-Perez, Ramiro

AU - Jain, Vimal K.

AU - Kaim, Wolfgang

PY - 2010/5/3

Y1 - 2010/5/3

N2 - Treatment of toluene solutions of the ditellurides [Te2{C 5H3N(R)-3}2] (R = H or Me) with [Pt(PPh 3)4] yielded two types of complexes, [Pt{2-Te-3-(R)C 5H3N}2(PPh3)2] (1a-d) as the major products and [Pt{2-Te-3-(R)C5H3N} 2Te(PPh3)] (2a-d) as minor products. The above complexes can also be obtained by the reaction of [PtCl2(PR′3) 2] (PR′3 = PPh3 or PPh 2(2-C5H4N)) with 2 equiv of Na(2-Te-C 5H3R). The complexes were characterized by elemental analyses and UV-vis, NMR (1H and 31P), and (in part) XPS spectroscopy. The molecular structures of [Pt(2-Te-C5H 4N)2Te(PPh3)] (2a) and [Pt{2-Te-C 5H3(Me)N}2Te(PPh3)] (2b) were established by single crystal X-ray diffraction. Both complexes exhibit a distorted square-planar configuration at the platinum(II) centers. The two mutually trans positioned 2-pyridinetellurolate ligands [2-Te-C 5H3(R)N] coordinate to the central platinum atom in a monodentate fashion through the tellurium atoms. The tellurium(0) atom adopts a "bent T" configuration as it is bridging the 2-Te- C5H 3(R)N molecules via N-Te-N bonds (166° angle) and coordinates to PtII in the trans position to PPh3. The novel bis(pyridine)tellurium(0) arrangement resembles the bis(pyridine)iodonium structure. The calculated NICS indices and ELF functions clearly show that the compounds 2a and 2b are aromatic in the region defined by the Te-C-N-Te-Pt five-membered rings.

AB - Treatment of toluene solutions of the ditellurides [Te2{C 5H3N(R)-3}2] (R = H or Me) with [Pt(PPh 3)4] yielded two types of complexes, [Pt{2-Te-3-(R)C 5H3N}2(PPh3)2] (1a-d) as the major products and [Pt{2-Te-3-(R)C5H3N} 2Te(PPh3)] (2a-d) as minor products. The above complexes can also be obtained by the reaction of [PtCl2(PR′3) 2] (PR′3 = PPh3 or PPh 2(2-C5H4N)) with 2 equiv of Na(2-Te-C 5H3R). The complexes were characterized by elemental analyses and UV-vis, NMR (1H and 31P), and (in part) XPS spectroscopy. The molecular structures of [Pt(2-Te-C5H 4N)2Te(PPh3)] (2a) and [Pt{2-Te-C 5H3(Me)N}2Te(PPh3)] (2b) were established by single crystal X-ray diffraction. Both complexes exhibit a distorted square-planar configuration at the platinum(II) centers. The two mutually trans positioned 2-pyridinetellurolate ligands [2-Te-C 5H3(R)N] coordinate to the central platinum atom in a monodentate fashion through the tellurium atoms. The tellurium(0) atom adopts a "bent T" configuration as it is bridging the 2-Te- C5H 3(R)N molecules via N-Te-N bonds (166° angle) and coordinates to PtII in the trans position to PPh3. The novel bis(pyridine)tellurium(0) arrangement resembles the bis(pyridine)iodonium structure. The calculated NICS indices and ELF functions clearly show that the compounds 2a and 2b are aromatic in the region defined by the Te-C-N-Te-Pt five-membered rings.

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U2 - 10.1021/ic902347s

DO - 10.1021/ic902347s

M3 - Article

C2 - 20369824

AN - SCOPUS:77951524690

VL - 49

SP - 4179

EP - 4185

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 9

ER -