suggestion是什么意思
the economist专利名称：ANSA GROUP-4-METAL BIS (.MU.-
baton
SUBSTITUTED) ALUMINUM COMPLEXES 发明人：CHEN, Eugene, Y.,KRUPER, William, J.,
Jr.,NICKIAS, Peter, N.,WILSON, David, R.
申请号：EP99927519.1
申请日：19990611
公开号：EP1104429A1
和霍金一起探索宇宙公开日：
20010606
专利内容由知识产权出版社提供
摘要：Ansa bis(ν-substituted) Group 4 metal and aluminum compounds comprising a single Group 4 metal atom and two aluminum metal atoms corresponding to formula (I) wherein: L' is a π-bonded group, M is a Group 4 metal, J is nitrogen or phosphorus; Z is a divalent bridging group causing the complex to have an ansa structure, R' is an inert monovalent ligand; r is one or two; X independently each occurrence is a Lewis basic ligand group able to form a ν-bidging ligand group, and optionally the two X groups may be joined together, and A' independently each occurrence is an aluminum containing Lewis acid compound that forms an adduct with the metal complex by means of the ν-bridging groups, and optionally two A' groups may be joined together thereby forming a single difunctional Lewis acid containing compound, and a method of preparation comprising contacting a charge-neutral Group IV metal coordination complex having at least two Lewis basic groups with at least two molar equivalents of charge-neutral aluminum coordination complexes having Lewis acidic aluminimum atoms such that at least two of the aluminum atoms of the aluminum coordination complexes bond to at least two of the Lewis basic groups of the Group IV coordination complex.
人事部三级笔译
申请人：THE DOW CHEMICAL COMPANY新学期
尘土的拼音
八年级下册英语单词领读地址：2030 Dow Center Midland, Michigan 48674 US 国籍：US12月四六级成绩查询时间
代理机构：Burford, Anthony Frederick
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