Romanowski Grzegorz, Wera Michał, Sikorski Artur
University of Gdańsk, Faculty of Chemistry, Sobieskiego 18/19, 80-952 Gdańsk, Poland.
Acta Crystallogr Sect E Struct Rep Online. 2008 Nov 13;64(Pt 12):m1548-9. doi: 10.1107/S160053680803328X.
A new monoclinic polymorph of the title compound, [V(2)(C(10)H(13)N(2)O)(2)O(4)], which is a centrosymmetric dimer, crystallizes in space group P2(1)/c, whereas the previously known polymorph crystallizes in the ortho-rhom-bic space group Pbca [Mokry & Carrano (1993 ▶). Inorg. Chem.32, 6119-6121]. Each V(V) atom is six-coordinated by one oxide group, two N atoms and one O atom from the Schiff base ligand, and by two additional bridging O atoms. The two methyl-ene groups are each disordered over two sites, with occupancy factors of 0.776 (14) and 0.224 (14). In the crystal structure, there are C-H⋯O hydrogen bonds and C-H⋯π inter-actions between the dimers.
标题化合物[V₂(C₁₀H₁₃N₂O)₂O₄]的一种新的单斜晶型多晶型物，它是一种中心对称二聚体，结晶于空间群P2(1)/c，而先前已知的多晶型物结晶于正交晶系空间群Pbca [Mokry & Carrano (1993 ▶). Inorg. Chem.32, 6119 - 6121]。每个V(V)原子由一个氧化物基团、来自席夫碱配体的两个N原子和一个O原子以及另外两个桥连O原子六配位。两个亚甲基各自在两个位置上无序排列，占有率因子分别为0.776 (14)和0.224 (14)。在晶体结构中，二聚体之间存在C—H⋯O氢键和C—H⋯π相互作用。
