Structural and magnetic properties of Co3(dpa) 4Br2

Rodolphe Clérac; F. Albert Cotton; Lee M. Daniels; Kim R. Dunbar; Carlos A. Murillo; Xiaoping Wang

doi:10.1039/b007876j

Structural and magnetic properties of Co₃(dpa) ₄Br₂

Rodolphe Clérac, F. Albert Cotton, Lee M. Daniels, Kim R. Dunbar, Carlos A. Murillo, Xiaoping Wang

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Abstract

Eleven crystal structures have been determined for the trinuclear Co ₃(dpa)₄Br₂ (1) (dpa = di(2-pyridyl)amide anion) molecule in the following solvates: 1·CH₂Cl₂ (at 111, 147 and 240 K), 1·C₆H₁₂ (at 110, 150, 213 and 298 K) and 1·1.75C₇H₈·0.5C₆H ₁₄ (at 110, 170, 213 and 295 K). Their magnetic behavior has been measured over the temperature range 5-350 K. In nearly every respect their behavior closely parallels that of their chloro analogs, although certain crystallographic and magnetic details differ. Of particular importance is that both symmetrical and unsymmetrical structures are observed in different crystalline forms and that the unsymmetrical forms display marked temperature dependence. It is, therefore, clear that the highly unconventional behavior of the chloro analog is not restricted to that one compound.

Original language	English
Pages (from-to)	386-391
Number of pages	6
Journal	Journal of the Chemical Society - Dalton Transactions
Issue number	4
DOIs	https://doi.org/10.1039/b007876j
State	Published - 2001
Externally published	Yes

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title = "Structural and magnetic properties of Co3(dpa) 4Br2",

abstract = "Eleven crystal structures have been determined for the trinuclear Co 3(dpa)4Br2 (1) (dpa = di(2-pyridyl)amide anion) molecule in the following solvates: 1·CH2Cl2 (at 111, 147 and 240 K), 1·C6H12 (at 110, 150, 213 and 298 K) and 1·1.75C7H8·0.5C6H 14 (at 110, 170, 213 and 295 K). Their magnetic behavior has been measured over the temperature range 5-350 K. In nearly every respect their behavior closely parallels that of their chloro analogs, although certain crystallographic and magnetic details differ. Of particular importance is that both symmetrical and unsymmetrical structures are observed in different crystalline forms and that the unsymmetrical forms display marked temperature dependence. It is, therefore, clear that the highly unconventional behavior of the chloro analog is not restricted to that one compound.",

author = "Rodolphe Cl{\'e}rac and Cotton, {F. Albert} and Daniels, {Lee M.} and Dunbar, {Kim R.} and Murillo, {Carlos A.} and Xiaoping Wang",

year = "2001",

doi = "10.1039/b007876j",

language = "English",

pages = "386--391",

journal = "Journal of the Chemical Society - Dalton Transactions",

issn = "1470-479X",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Structural and magnetic properties of Co3(dpa) 4Br2

AU - Clérac, Rodolphe

AU - Cotton, F. Albert

AU - Daniels, Lee M.

AU - Dunbar, Kim R.

AU - Murillo, Carlos A.

AU - Wang, Xiaoping

PY - 2001

Y1 - 2001

N2 - Eleven crystal structures have been determined for the trinuclear Co 3(dpa)4Br2 (1) (dpa = di(2-pyridyl)amide anion) molecule in the following solvates: 1·CH2Cl2 (at 111, 147 and 240 K), 1·C6H12 (at 110, 150, 213 and 298 K) and 1·1.75C7H8·0.5C6H 14 (at 110, 170, 213 and 295 K). Their magnetic behavior has been measured over the temperature range 5-350 K. In nearly every respect their behavior closely parallels that of their chloro analogs, although certain crystallographic and magnetic details differ. Of particular importance is that both symmetrical and unsymmetrical structures are observed in different crystalline forms and that the unsymmetrical forms display marked temperature dependence. It is, therefore, clear that the highly unconventional behavior of the chloro analog is not restricted to that one compound.

AB - Eleven crystal structures have been determined for the trinuclear Co 3(dpa)4Br2 (1) (dpa = di(2-pyridyl)amide anion) molecule in the following solvates: 1·CH2Cl2 (at 111, 147 and 240 K), 1·C6H12 (at 110, 150, 213 and 298 K) and 1·1.75C7H8·0.5C6H 14 (at 110, 170, 213 and 295 K). Their magnetic behavior has been measured over the temperature range 5-350 K. In nearly every respect their behavior closely parallels that of their chloro analogs, although certain crystallographic and magnetic details differ. Of particular importance is that both symmetrical and unsymmetrical structures are observed in different crystalline forms and that the unsymmetrical forms display marked temperature dependence. It is, therefore, clear that the highly unconventional behavior of the chloro analog is not restricted to that one compound.

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DO - 10.1039/b007876j

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SP - 386

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JO - Journal of the Chemical Society - Dalton Transactions

JF - Journal of the Chemical Society - Dalton Transactions

IS - 4

ER -

Structural and magnetic properties of Co₃(dpa) ₄Br₂

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