Affiliation:
1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China Qingdao Shandong 266100 China
2. Baotou Research Institute of Rare Earths, Baotou Inner Mongolia 014040 China
3. State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
Abstract
Comprehensive SummaryA new family of trinuclear windwheel complexes with molecular formula [MII3(tpa)3(μ‐ttc)](ClO4)3·n(sol) (ttc = 1,3,5‐triazine‐2,4,6‐trithiol; tpa = tris(2‐pyridylmethyl)amine; M = Mn, n = 2, sol = CH3CN, 1; M = Co, n = 1, sol = CH3CN, 2; M = Ni, n = 0, 3) were synthesized and characterized. Single‐crystal X‐ray diffraction revealed that three metal centers in 1—3 are connected by ttc bridge, forming a regular triangular MII3 core. Each metal center is bonded by chelating S, N atoms from ttc and by N atoms from tpa. Magnetic studies showed that 1—3 displayed antiferromagnetic behavior and further gave the easy‐axis anisotropy (D = −0.77 cm−1 for 1 and −8.13 cm−1 for 2) and easy‐plane anisotropy (D = 5.08 cm−1 for 3). Moreover, 2 exhibited field‐induced slow magnetic relaxation behavior and their effective energy barriers were roughly evaluated Ueff = 6.9 K.
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