Stereochemistry and properties of the M(II)N(py) coordination bond in the low-spin dipyridinated iron(II) and cobalt(II) phthalocyanines
作者:Jan Janczak、Ryszard Kubiak
DOI:10.1016/s0020-1693(02)01060-5
日期:2003.1
A comparison between the coordination bond M(II)N(py) and vibrational properties and stereochemistry of the dipyridinated iron(II) and cobalt(II) phthalocyaninatocomplexes, FePc(py)2 and CoPc(py)2 (Pc=C32H16N8, py=C5H5N), is carried out using the single crystal X-ray diffraction and the vibrational spectroscopy. Both dipyridinated complexes have been synthesized in crystalline form by heating of
配位键M(II)N(py)与酞菁双氰化铁(II)和钴(II)配合物FePc(py)2和CoPc(py)2的振动性质和立体化学之间的比较(Pc = C使用单晶X射线衍射和振动光谱法进行32 H 16 N 8,py = C 5 H 5 N)的测定。通过在160°C下加热吡啶中的β-FePc或β-CoPc,两种双吡啶化的配合物都以晶体形式合成。在缓慢冷却过程中形成晶体。FePc(py)2和CoPc(py)2的晶体是同构的。它们在空间群P中结晶单斜系统的2 1 / c,每个晶胞有两个分子。这些配合物中的结构结果和配位键性质严格相关。Fe 2+和Co 2+阳离子与酞菁基(2-)大环的四个N-异吲哚原子配位,并与吡啶分子的两个氮原子轴向配位,形成四边形金字塔。MN异吲哚的振动参数比相应的结构参数受Co和Fe电子结构差异的影响更大。轴向M(II)N(py)键长主要取决于中心金属的电子构型。FePc