Synthesis and characterization of [trans-di(μ-acetato)(μ-bis(diphenylphosphino)methylamine)-bis(pyridine) dimolybdenum(II)]bis(tetrafluoroborate) and derivatives

Wen Mei Xue; Fritz E. Kühn; Guofang Zhang; Eberhardt Herdtweck

doi:10.1016/S0022-328X(99)00647-6

Synthesis and characterization of [trans-di(μ-acetato)(μ-bis(diphenylphosphino)methylamine)-bis(pyridine) dimolybdenum(II)]bis(tetrafluoroborate) and derivatives

Wen Mei Xue, Fritz E. Kühn, Guofang Zhang, Eberhardt Herdtweck

Associate Professorship of Molecular Catalysis

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Reaction of trans-[Mo₂(μ-O₂CCH₃) ₂(μ-dppma)₂(MeCN)₂](BF₄) ₂ (1, dppma = diphenylphosphinomethylamine) with a variety of pyridine derivatives leads to axially substituted complexes of formula trans-[Mo₂(μ-O₂CCH₃) ₂(μ-dppma)₂(NC₅H₄-R) ₂](BF₄)₂ (R = H, 2; C(CH₃)₃, 3; C₆H₅, 4; CH=CHC₆H₅, 5; CCH, 6; CN, 7). The obtained complexes were characterized by ¹H-, ¹³C- and ³¹P{¹H}-NMR, IR, Raman spectroscopy and elemental analyses. Raman spectroscopy shows a weakening of the metal-metal interaction due to the axially coordinated pyridine ligands in all examined cases. Compound 2 was additionally examined by single-crystal X-ray analysis, revealing a Mo-Mo distance of 215.04(2) pm, which is slightly longer than that in compound 1 (213.15(3) pm).

Original language	English
Pages (from-to)	177-182
Number of pages	6
Journal	Journal of Organometallic Chemistry
Volume	596
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-328X(99)00647-6
State	Published - 29 Feb 2000

Keywords

Axial ligands
Dimolybdenum(II)
Metal-metal bonds
Pyridine derivatives

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10.1016/S0022-328X(99)00647-6

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title = "Synthesis and characterization of [trans-di(μ-acetato)(μ-bis(diphenylphosphino)methylamine)-bis(pyridine) dimolybdenum(II)]bis(tetrafluoroborate) and derivatives",

abstract = "Reaction of trans-[Mo2(μ-O2CCH3) 2(μ-dppma)2(MeCN)2](BF4) 2 (1, dppma = diphenylphosphinomethylamine) with a variety of pyridine derivatives leads to axially substituted complexes of formula trans-[Mo2(μ-O2CCH3) 2(μ-dppma)2(NC5H4-R) 2](BF4)2 (R = H, 2; C(CH3)3, 3; C6H5, 4; CH=CHC6H5, 5; CCH, 6; CN, 7). The obtained complexes were characterized by 1H-, 13C- and 31P{1H}-NMR, IR, Raman spectroscopy and elemental analyses. Raman spectroscopy shows a weakening of the metal-metal interaction due to the axially coordinated pyridine ligands in all examined cases. Compound 2 was additionally examined by single-crystal X-ray analysis, revealing a Mo-Mo distance of 215.04(2) pm, which is slightly longer than that in compound 1 (213.15(3) pm).",

keywords = "Axial ligands, Dimolybdenum(II), Metal-metal bonds, Pyridine derivatives",

author = "Xue, {Wen Mei} and K{\"u}hn, {Fritz E.} and Guofang Zhang and Eberhardt Herdtweck",

year = "2000",

month = feb,

day = "29",

doi = "10.1016/S0022-328X(99)00647-6",

language = "English",

volume = "596",

pages = "177--182",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

number = "1-2",

}

Synthesis and characterization of [trans-di(μ-acetato)(μ-bis(diphenylphosphino)methylamine)-bis(pyridine) dimolybdenum(II)]bis(tetrafluoroborate) and derivatives. / Xue, Wen Mei; Kühn, Fritz E.; Zhang, Guofang et al.
In: Journal of Organometallic Chemistry, Vol. 596, No. 1-2, 29.02.2000, p. 177-182.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Synthesis and characterization of [trans-di(μ-acetato)(μ-bis(diphenylphosphino)methylamine)-bis(pyridine) dimolybdenum(II)]bis(tetrafluoroborate) and derivatives

AU - Xue, Wen Mei

AU - Kühn, Fritz E.

AU - Zhang, Guofang

AU - Herdtweck, Eberhardt

PY - 2000/2/29

Y1 - 2000/2/29

N2 - Reaction of trans-[Mo2(μ-O2CCH3) 2(μ-dppma)2(MeCN)2](BF4) 2 (1, dppma = diphenylphosphinomethylamine) with a variety of pyridine derivatives leads to axially substituted complexes of formula trans-[Mo2(μ-O2CCH3) 2(μ-dppma)2(NC5H4-R) 2](BF4)2 (R = H, 2; C(CH3)3, 3; C6H5, 4; CH=CHC6H5, 5; CCH, 6; CN, 7). The obtained complexes were characterized by 1H-, 13C- and 31P{1H}-NMR, IR, Raman spectroscopy and elemental analyses. Raman spectroscopy shows a weakening of the metal-metal interaction due to the axially coordinated pyridine ligands in all examined cases. Compound 2 was additionally examined by single-crystal X-ray analysis, revealing a Mo-Mo distance of 215.04(2) pm, which is slightly longer than that in compound 1 (213.15(3) pm).

AB - Reaction of trans-[Mo2(μ-O2CCH3) 2(μ-dppma)2(MeCN)2](BF4) 2 (1, dppma = diphenylphosphinomethylamine) with a variety of pyridine derivatives leads to axially substituted complexes of formula trans-[Mo2(μ-O2CCH3) 2(μ-dppma)2(NC5H4-R) 2](BF4)2 (R = H, 2; C(CH3)3, 3; C6H5, 4; CH=CHC6H5, 5; CCH, 6; CN, 7). The obtained complexes were characterized by 1H-, 13C- and 31P{1H}-NMR, IR, Raman spectroscopy and elemental analyses. Raman spectroscopy shows a weakening of the metal-metal interaction due to the axially coordinated pyridine ligands in all examined cases. Compound 2 was additionally examined by single-crystal X-ray analysis, revealing a Mo-Mo distance of 215.04(2) pm, which is slightly longer than that in compound 1 (213.15(3) pm).

KW - Axial ligands

KW - Dimolybdenum(II)

KW - Metal-metal bonds

KW - Pyridine derivatives

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U2 - 10.1016/S0022-328X(99)00647-6

DO - 10.1016/S0022-328X(99)00647-6

M3 - Article

AN - SCOPUS:0000651550

SN - 0022-328X

VL - 596

SP - 177

EP - 182

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1-2

ER -

Synthesis and characterization of [trans-di(μ-acetato)(μ-bis(diphenylphosphino)methylamine)-bis(pyridine) dimolybdenum(II)]bis(tetrafluoroborate) and derivatives

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