Syntheses, Structures and Characterizations of Two New Vanadium(V) Complexes: [PyH][VⅤO2(C14H9N2O3Br)] and [VⅤO(C14H9N2O

The new oxovanadium (Ⅴ) complex, [PyH][VO2(L)] 1 (salicyladehyde 5-bromo salicyloylhydrazone is abbreviated as H2L; Hpy is protonated pyridine) was obtained from a refluxed solution of VOSO4 and H2L in acetonitrile-methanol-pyridine. Similarly, another new complex, [VO(L)(OCH3)] 2 was synthesized by refluxing VOSO4 and H2L in methanol-pyridine. Crystal data for 1: C19H15N3O5BrV, Mr = 496.2, monoclinic, P21/n, a = 7.1885(3), b = 9.2718(3), c = 28.803(1) (A), ( = 96.185(1)(, Z = 4 and V = 1908.6(1) (A)3; for 2: C15H12N2O5BrV, Mr = 431.1, monoclinic, P21/n, a = 12.202(2), b = 8.045(2), c = 16.604(3)(A), ( = 101.29(3)(, Z = 4 and V = 1598.4(2)(A)3. The structures of 1 and 2 have been determined by X-ray analyses and reveal that the coordination environments of V atoms in both complexes are of square-based pyramid. Three of the four based donor atoms are from the tridentate "ONO" donor ligand while the fourth is one terminal oxygen atom with the V(1)–O(3) distance 1.646(4) (A) for 1 and one -OCH3 group with the V(1)-O(3) distance 1.753(3)(A) for 2. The V(1)-O(4) terminals occupy the axial sites in both cases. The complexes are also characterized by IR and 1H NMR spectroscopies.

作 者： ZHANG Xiu-Tang ZHAN Xiao-ping WU Ding-Ming ZHANG Quan-Zheng CHEN Shu-mei YU Ya-qin LU Can-Zhong   作者單位： State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China  刊 名： 結(jié)構(gòu)化學(xué)  ISTIC SCI PKU 英文刊名： CHINESE JOURNAL OF STRUCTURAL CHEMISTRY  年，卷(期)： 2002 21(6)  分類號(hào)： O64  關(guān)鍵詞： salicyladehyde 5-bromo salicyloylhydrazone   vanadium (Ⅴ) complex   crystal structure  

【Syntheses, Structures and Characteri】相關(guān)文章：

Syntheses and Crystal Structures of Two Mononuclear Tin(IV) Complexes Derived from Sn(edt)2 (edt = Ethane-1,2-dithiolate04-26

Category Theoretic Properties of Topological Structures and Proximity Structures on L-fuzzy Space04-26

Cage and ladder structures of silsesquioxanes characterized by UV-MALDI-TOF mass spectrometry04-27

NUMERICAL SIMULATION STUDY OF THE INNER-CORE STRUCTURES AND THE MECHANISM FOR INSHORE STRENGTHENING OF SOUTH CHINA SEA T04-27