(Bis(terpyridine))copper(II) Tetraphenylborate: A Complex Example for the Jahn-Teller Effect

Andreas Meyer; Gregor Schnakenburg; Robert Glaum; Olav Schiemann

doi:10.1021/acs.inorgchem.5b01157

(Bis(terpyridine))copper(II) Tetraphenylborate: A Complex Example for the Jahn-Teller Effect

Andreas Meyer
, Gregor Schnakenburg
, Robert Glaum
, Olav Schiemann

University of Bonn

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

36 Scopus citations

Abstract

The surprisingly complicated crystal structure of (bis(terpyridine))copper(II) tetraphenylborate [Cu(tpy)₂](BPh₄)₂ (tpy = 2,2′:6′,2′-terpyridine) consists of six crystallographically independent [Cu(tpy)₂]²⁺ complexes. At ambient temperature, five out of six [Cu^IIN₆] chromophores appear to be compressed octahedra, while at 100 K, four exhibit elongated and only two compressed octahedral geometry. Temperature dependent single crystal UV/vis (100, 298 K) and EPR measurements (20, 100, 298 K) as well as AOM calculations suggest that the octahedra which show apparently compressed octahedral geometry (XRD) result from dynamic Jahn-Teller behavior of elongated octahedra [Cu^IIN₆]. The detailed correlation of structural and spectroscopic data allows an understanding of the strongly solvent-dependent structures of the [Cu(tpy)₂]²⁺ complex in solution. (Graph Presented).

Original language	English
Pages (from-to)	8456-8464
Number of pages	9
Journal	Inorganic Chemistry
Volume	54
Issue number	17
DOIs	https://doi.org/10.1021/acs.inorgchem.5b01157
State	Published - 8 Sep 2015
Externally published	Yes

Access to Document

10.1021/acs.inorgchem.5b01157

Cite this

@article{0e39159320fe4584a9b7c4af10819cc6,

title = "(Bis(terpyridine))copper(II) Tetraphenylborate: A Complex Example for the Jahn-Teller Effect",

abstract = "The surprisingly complicated crystal structure of (bis(terpyridine))copper(II) tetraphenylborate [Cu(tpy)2](BPh4)2 (tpy = 2,2′:6′,2′-terpyridine) consists of six crystallographically independent [Cu(tpy)2]2+ complexes. At ambient temperature, five out of six [CuIIN6] chromophores appear to be compressed octahedra, while at 100 K, four exhibit elongated and only two compressed octahedral geometry. Temperature dependent single crystal UV/vis (100, 298 K) and EPR measurements (20, 100, 298 K) as well as AOM calculations suggest that the octahedra which show apparently compressed octahedral geometry (XRD) result from dynamic Jahn-Teller behavior of elongated octahedra [CuIIN6]. The detailed correlation of structural and spectroscopic data allows an understanding of the strongly solvent-dependent structures of the [Cu(tpy)2]2+ complex in solution. (Graph Presented).",

author = "Andreas Meyer and Gregor Schnakenburg and Robert Glaum and Olav Schiemann",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = sep,

day = "8",

doi = "10.1021/acs.inorgchem.5b01157",

language = "English",

volume = "54",

pages = "8456--8464",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "17",

}

TY - JOUR

T1 - (Bis(terpyridine))copper(II) Tetraphenylborate

T2 - A Complex Example for the Jahn-Teller Effect

AU - Meyer, Andreas

AU - Schnakenburg, Gregor

AU - Glaum, Robert

AU - Schiemann, Olav

PY - 2015/9/8

Y1 - 2015/9/8

N2 - The surprisingly complicated crystal structure of (bis(terpyridine))copper(II) tetraphenylborate [Cu(tpy)2](BPh4)2 (tpy = 2,2′:6′,2′-terpyridine) consists of six crystallographically independent [Cu(tpy)2]2+ complexes. At ambient temperature, five out of six [CuIIN6] chromophores appear to be compressed octahedra, while at 100 K, four exhibit elongated and only two compressed octahedral geometry. Temperature dependent single crystal UV/vis (100, 298 K) and EPR measurements (20, 100, 298 K) as well as AOM calculations suggest that the octahedra which show apparently compressed octahedral geometry (XRD) result from dynamic Jahn-Teller behavior of elongated octahedra [CuIIN6]. The detailed correlation of structural and spectroscopic data allows an understanding of the strongly solvent-dependent structures of the [Cu(tpy)2]2+ complex in solution. (Graph Presented).

AB - The surprisingly complicated crystal structure of (bis(terpyridine))copper(II) tetraphenylborate [Cu(tpy)2](BPh4)2 (tpy = 2,2′:6′,2′-terpyridine) consists of six crystallographically independent [Cu(tpy)2]2+ complexes. At ambient temperature, five out of six [CuIIN6] chromophores appear to be compressed octahedra, while at 100 K, four exhibit elongated and only two compressed octahedral geometry. Temperature dependent single crystal UV/vis (100, 298 K) and EPR measurements (20, 100, 298 K) as well as AOM calculations suggest that the octahedra which show apparently compressed octahedral geometry (XRD) result from dynamic Jahn-Teller behavior of elongated octahedra [CuIIN6]. The detailed correlation of structural and spectroscopic data allows an understanding of the strongly solvent-dependent structures of the [Cu(tpy)2]2+ complex in solution. (Graph Presented).

UR - https://www.scopus.com/pages/publications/84941275393

U2 - 10.1021/acs.inorgchem.5b01157

DO - 10.1021/acs.inorgchem.5b01157

M3 - Article

AN - SCOPUS:84941275393

SN - 0020-1669

VL - 54

SP - 8456

EP - 8464

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 17

ER -

(Bis(terpyridine))copper(II) Tetraphenylborate: A Complex Example for the Jahn-Teller Effect

Abstract

Access to Document

Other files and links

Fingerprint

Cite this