[5-5]Bitrovacene: Synthesis, Structure, and Intermetallic communication

C. Elschenbroich; Olav Schiemann; O. Burghaus; K. Harms; J. Pebler

doi:10.1021/om9902232

[5-5]Bitrovacene: Synthesis, Structure, and Intermetallic communication

C. Elschenbroich, Olav Schiemann, O. Burghaus, K. Harms, J. Pebler

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

Abstract

Lithiation of trovacene, (eta(7)-C7H7)V(eta(5)-C5H5), Li/I exchange, and Pd(dppf)Cl-2-catalyzed homocoupling affords [5-5]bitrovacene 5(2.). Intermetallic communication manifests itself in typical biradical features of the EPR spectrum and in the resolution of redox splittings of 147 mV for the two subsequent oxidations and 224 mV for the reductions, respectively. 5(2.) adopts a trans conformation in the single crystal (X-ray diffraction) as well as in rigid solution (EPR spectroscopy). A magnetic susceptibility study of 5(2.) reveals weak antiferromagnetic coupling (J = -2.78 cm(-1)) of the two V(d(5)) centers.

Original language	English
Pages (from-to)	3273-3277
Number of pages	5
Journal	Organometallics
Volume	18
Issue number	17
DOIs	https://doi.org/10.1021/om9902232
Publication status	Published - 16 Aug 1999

Keywords

METAL PI-COMPLEXES
BENZENE-DERIVATIVES
SANDWICH
STATE
EPR
METALLOCENES
RESONANCE
SPACER
UNIT
CR

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10.1021/om9902232

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title = "[5-5]Bitrovacene: Synthesis, Structure, and Intermetallic communication",

abstract = "Lithiation of trovacene, (eta(7)-C7H7)V(eta(5)-C5H5), Li/I exchange, and Pd(dppf)Cl-2-catalyzed homocoupling affords [5-5]bitrovacene 5(2.). Intermetallic communication manifests itself in typical biradical features of the EPR spectrum and in the resolution of redox splittings of 147 mV for the two subsequent oxidations and 224 mV for the reductions, respectively. 5(2.) adopts a trans conformation in the single crystal (X-ray diffraction) as well as in rigid solution (EPR spectroscopy). A magnetic susceptibility study of 5(2.) reveals weak antiferromagnetic coupling (J = -2.78 cm(-1)) of the two V(d(5)) centers.",

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author = "C. Elschenbroich and Olav Schiemann and O. Burghaus and K. Harms and J. Pebler",

year = "1999",

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doi = "10.1021/om9902232",

language = "English",

volume = "18",

pages = "3273--3277",

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TY - JOUR

T1 - [5-5]Bitrovacene: Synthesis, Structure, and Intermetallic communication

AU - Elschenbroich, C.

AU - Schiemann, Olav

AU - Burghaus, O.

AU - Harms, K.

AU - Pebler, J.

PY - 1999/8/16

Y1 - 1999/8/16

N2 - Lithiation of trovacene, (eta(7)-C7H7)V(eta(5)-C5H5), Li/I exchange, and Pd(dppf)Cl-2-catalyzed homocoupling affords [5-5]bitrovacene 5(2.). Intermetallic communication manifests itself in typical biradical features of the EPR spectrum and in the resolution of redox splittings of 147 mV for the two subsequent oxidations and 224 mV for the reductions, respectively. 5(2.) adopts a trans conformation in the single crystal (X-ray diffraction) as well as in rigid solution (EPR spectroscopy). A magnetic susceptibility study of 5(2.) reveals weak antiferromagnetic coupling (J = -2.78 cm(-1)) of the two V(d(5)) centers.

AB - Lithiation of trovacene, (eta(7)-C7H7)V(eta(5)-C5H5), Li/I exchange, and Pd(dppf)Cl-2-catalyzed homocoupling affords [5-5]bitrovacene 5(2.). Intermetallic communication manifests itself in typical biradical features of the EPR spectrum and in the resolution of redox splittings of 147 mV for the two subsequent oxidations and 224 mV for the reductions, respectively. 5(2.) adopts a trans conformation in the single crystal (X-ray diffraction) as well as in rigid solution (EPR spectroscopy). A magnetic susceptibility study of 5(2.) reveals weak antiferromagnetic coupling (J = -2.78 cm(-1)) of the two V(d(5)) centers.

KW - METAL PI-COMPLEXES

KW - BENZENE-DERIVATIVES

KW - SANDWICH

KW - STATE

KW - EPR

KW - METALLOCENES

KW - RESONANCE

KW - SPACER

KW - UNIT

KW - CR

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UR - http://pubs.acs.org/cgi-bin/article.cgi/orgnd7/1999/18/i17/pdf/om9902232.pdf

U2 - 10.1021/om9902232

DO - 10.1021/om9902232

M3 - Article

SN - 0276-7333

VL - 18

SP - 3273

EP - 3277

JO - Organometallics

JF - Organometallics

IS - 17

ER -

[5-5]Bitrovacene: Synthesis, Structure, and Intermetallic communication

Abstract

Keywords

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