کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1305083 | 974869 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new unique tetranuclear Cu(II) compound with double bridging thiocyanate anions: Synthesis, X-ray structure and magnetism of [Cu4(μ1,3-NCS)6(dpyam)4(O2CH)2(H2O)2] (dpyam = di-2-pyridylamine)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A new unique tetranuclear copper(II) complex doubly-bridged by thiocyanate anions, [Cu4(μ1,3-NCS)6(dpyam)4(O2CH)2(H2O)2 (dpyam = di-2-pyridylamine) has been synthesized and characterized by X-ray diffraction methods and magnetic measurements. The “outer” Cu ions, with a CuN3O(S, O) chromophore, have an axially elongated octahedral geometry. The axial positions are occupied by an oxygen atom of a water molecule (Cu-O distance 2.518(1) Ã
) and by a sulfur atom of a bridging thiocyanate anion at a semi-coordination distance of 3.048(1)Â Ã
. The “inner” Cu atoms, with a CuN4(S2) chromophore do also have an axially elongated octahedral geometry. The axial positions are occupied by two sulfur atoms of two bridging thiocynate anions (Cu-S semi-coordinating distances are 2.875(1) and 3.126(1)Â Ã
). Each Cu ion is bridged by two μ1,3-NCS anions (in an equatorial-axial bridging mode) forming in this way a zigzag tetranuclear unit. The magnetic susceptibility data of the compound have been investigated between 5 and 200 K. The compound shows a very weak antiferromagnetic interaction between the Cu ions, in agreement with the non-overlapping magnetic orbitals of each Cu ion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganic Chemistry Communications - Volume 9, Issue 2, February 2006, Pages 242-247
Journal: Inorganic Chemistry Communications - Volume 9, Issue 2, February 2006, Pages 242-247
نویسندگان
Sujittra Youngme, Jaturong Phatchimkun, Unchulee Suksangpanya, Chaveng Pakawatchai, Gerard A. van Albada, Manuel Quesada, Jan Reedijk,