Crystal Structures and Magnetic Studies of Naphthalene Derivatives Containing Nitronyl Nitroxides

• 作 者: 张德清 朱洪庆 丁亮 徐伟 刘伟 朱道本
• 机 构: Organic Solids Laboratory, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of
• 出 处: Chinese Journal of Chemistry
• 发表日期: 2003年05期
• 关键词: struc package

Crystal structures of new nitronyl nitroxide derivatives 1, 2 and 3 were determined with X ray diffraction analysis: 1, monoclinic, C 2/ c , a =1 2404(5) nm, b =0 9730(5) nm, c =2 7049(10) nm, β =98 189(15)°, V =3 2315(24) nm 3, Z =8; 2, orthorhombic, Pbca , a =0 61262(2) nm, b =1 11426(6) nm, c =2 30543(13) nm, V =1 57373(13) nm 3, Z =4; 3, monoclinic, P 2(1)/ n , a =0 64253(4) nm, b =2 55003(17) nm, c =1 15497(6) nm, β =95 000(3)°, V =1 8852(2) nm 3, Z =4. Their magnetic properties were measured with SQUID and analyzed based on their crystal structures with simple singlet triplet, modified one dimensional antiferromagnetic chain and modified singlet triplet models respectively: 1, J/k b=-2 5 K; 2, J / k b=7 8 K, θ =2 8 K; 3, J/k b=-0 96 K, θ =0 21 K.

Crystal structures of new nitronyl nitroxide derivatives 1, 2 and 3 were determined with X ray diffraction analysis: 1, monoclinic, C 2 / c, a = 1 2404 (5) nm, b = 0 9730 (5) nm, c = 2 7049 10 nm, β = 98 189 (15) °, V = 3 2315 (24) nm 3, Z = 8; 2, orthorhombic, Pbca, a = 0 61262 (2) nm, b = ), c = 2 30543 (13) nm, V = 1 57373 (13) nm 3, Z = 4; 3, monoclinic, P 2 (1) / n, a = 0 64253 (4) nm, b = 2 55003 (17) nm, c = 1 15497 (6) nm, β = 95 000 (3) °, V = 18852 (2) nm 3, Z = 4. Their magnetic properties were measured with SQUID and analyzed based on their crystal structures with simple singlet triplet, modified one dimensional antiferromagnetic chain and modified singlet triplet models respectively: 1, J / kb = -2 5 K; J / kb = 7 8 K, θ = 2 8 K; kb = -0 96 K, θ = 0 21 K.