Premium
Haloperoxidase‐like Compounds: Synthesis, Structure and Properties of Two New Oxidovanadium‐Poly(pyrazolyl)borate‐Carboxylate Complexes
Author(s) -
Li ZhangPeng,
Xing YongHeng,
Wang ChunGuang,
Li Jing,
Cao YunZhu,
Zeng XiaoQing,
Ge MaoFa,
Niu ShuYun
Publication year - 2009
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900198
Subject(s) - chemistry , dimer , hydrogen bond , pyrazole , boron , carboxylate , octahedron , molecule , vanadium , crystal structure , infrared spectroscopy , polymer chemistry , medicinal chemistry , inorganic chemistry , crystallography , stereochemistry , organic chemistry
Two new oxidovanadium (IV) complexes: TpVO(L 1 ) ( 1 ) and Tp*VO(pzH*)(L 2 ) ( 2 ) [Tp = hydrotris(pyrazolyl)borate, HL 1 = 5‐methyl‐1 H ‐pyrazole‐3‐carboxylic acid, Tp* = hydrotris(3,5‐dimethylpyrazolyl)borate, pzH* = 3,5‐dimethylpyrazole, HL 2 = 5‐phenyl‐1 H ‐pyrazole‐3‐carboxylic acid] have been synthesized and characterized by elemental analysis and IR spectroscopy. The single‐crystal structures of the complexes shows that the vanadium ion is in a distorted octahedral environment with a N 4 O 2 donor set in each complex. Additionally, hydrogen bonding interaction exits in both complexes. Interestingly, the molecules of 1 are held together to form a 1D hydrogen bonded polymer along the b axis, whereas complex 2 is a hydrogen bonded dimer. In addition, the catalytic activities of complexes 1 and 2 in bromination reactions in phosphate buffer with phenol red as a trap were evaluated primary by UV/Vis spectroscopy. Furthermore, ab initio calculations of complexes 1 and 2 were performed.