Linear tricobalt compounds with Di-(2-pyridyl)amide (dpa) ligands: Studies of the paramagnetic compound Co3(dpa)4Cl2 in solution

F. Albert Cotton; Carlos A. Murillo; Xiaoping Wang

doi:10.1021/ic990944t

Linear tricobalt compounds with Di-(2-pyridyl)amide (dpa) ligands: Studies of the paramagnetic compound Co₃(dpa)₄Cl₂ in solution

F. Albert Cotton, Carlos A. Murillo, Xiaoping Wang

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

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Abstract

Solutions of Co₃(dpa)₄Cl₂, where dpa = di(2-pyridyl)amide ion, in CD₂Cl₂ were studied by NMR in the temperature range 183-303 K. The spectra show only four ₁H and five ₁₃C resonance signals, consistent with the D₄ symmetry of the molecules found in the solid. The magnetic susceptibility involution was determined by the Evans method from 193 to 308 K. These observations can be modeled as an S = 1/2 to S = 5/2 spin-transition process with ΔH = 7.7(2) kJ mol^-1 and ΔS = 20.8(8) J K^-1 mol^-1.

Original language	English
Pages (from-to)	6294-6297
Number of pages	4
Journal	Inorganic Chemistry
Volume	38
Issue number	26
DOIs	https://doi.org/10.1021/ic990944t
State	Published - 1999
Externally published	Yes

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title = "Linear tricobalt compounds with Di-(2-pyridyl)amide (dpa) ligands: Studies of the paramagnetic compound Co3(dpa)4Cl2 in solution",

abstract = "Solutions of Co3(dpa)4Cl2, where dpa = di(2-pyridyl)amide ion, in CD2Cl2 were studied by NMR in the temperature range 183-303 K. The spectra show only four 1H and five 13C resonance signals, consistent with the D4 symmetry of the molecules found in the solid. The magnetic susceptibility involution was determined by the Evans method from 193 to 308 K. These observations can be modeled as an S = 1/2 to S = 5/2 spin-transition process with ΔH = 7.7(2) kJ mol-1 and ΔS = 20.8(8) J K-1 mol-1.",

author = "{Albert Cotton}, F. and Murillo, {Carlos A.} and Xiaoping Wang",

year = "1999",

doi = "10.1021/ic990944t",

language = "English",

volume = "38",

pages = "6294--6297",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

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T1 - Linear tricobalt compounds with Di-(2-pyridyl)amide (dpa) ligands

T2 - Studies of the paramagnetic compound Co3(dpa)4Cl2 in solution

AU - Albert Cotton, F.

AU - Murillo, Carlos A.

AU - Wang, Xiaoping

PY - 1999

Y1 - 1999

N2 - Solutions of Co3(dpa)4Cl2, where dpa = di(2-pyridyl)amide ion, in CD2Cl2 were studied by NMR in the temperature range 183-303 K. The spectra show only four 1H and five 13C resonance signals, consistent with the D4 symmetry of the molecules found in the solid. The magnetic susceptibility involution was determined by the Evans method from 193 to 308 K. These observations can be modeled as an S = 1/2 to S = 5/2 spin-transition process with ΔH = 7.7(2) kJ mol-1 and ΔS = 20.8(8) J K-1 mol-1.

AB - Solutions of Co3(dpa)4Cl2, where dpa = di(2-pyridyl)amide ion, in CD2Cl2 were studied by NMR in the temperature range 183-303 K. The spectra show only four 1H and five 13C resonance signals, consistent with the D4 symmetry of the molecules found in the solid. The magnetic susceptibility involution was determined by the Evans method from 193 to 308 K. These observations can be modeled as an S = 1/2 to S = 5/2 spin-transition process with ΔH = 7.7(2) kJ mol-1 and ΔS = 20.8(8) J K-1 mol-1.

UR - http://www.scopus.com/inward/record.url?scp=0001262660&partnerID=8YFLogxK

U2 - 10.1021/ic990944t

DO - 10.1021/ic990944t

M3 - Article

AN - SCOPUS:0001262660

SN - 0020-1669

VL - 38

SP - 6294

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 26

ER -

Linear tricobalt compounds with Di-(2-pyridyl)amide (dpa) ligands: Studies of the paramagnetic compound Co₃(dpa)₄Cl₂ in solution

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