title: New Class of Hydrido Iron(II) Compounds with cis-Reactive Sites: Combination of Iron and Diphosphinodithio Ligand.
abstract: The cationic complex [Fe(P2 S2 )(NCMe)2 ](2+) (P2 S2 =(Ph2 PC6 H4 CH2 S)2 (C2 H4 ) ([1(NCMe)2 ](2+) )), with two MeCN ligands in a cis orientation, was synthesized and characterized. The MeCN ligand in [1(NCMe)2 ](2+) undergoes further substitution by a hydride ligand or CO to give iron(II) hydrides [H1(NCMe)](+) , [H1H](0) , and [H1(CO)](+) . The order of reactivity of the hydrides was [H1H](0) >[H1(NCMe)](+) >[H1(CO)](+) , and was illustrated by their reactions toward protic acids, the organic cation of 10-methylacridinium (MeAcr(+) ) as a hydride acceptor, and intermolecular hydride transfer reactions among these ferrous compounds. For example, MeAcr(+) was reduced initially by a one-electron transfer process from [H1H](0) , resulting in competing reactions of MeAcr(.) dimerization, hydrogen atom transfer from [H1H](+) to MeAcr(.) , and decomposition of [H1H](+) . MeAcrH was produced in excellent yields through a single-step H(-) transfer from [H1(NCMe)](+) to MeAcr(+) , but [H1(CO)](+) was inactive toward MeAcr(+) .
authors.affiliation: Key Lab of Colloid and Interface Chemistry of Ministry, of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27, South Shanda Road, Jinan, 250100, P.R. China.|Department of Chemistry, Shantou University, Guangdong, 515063, P.R. China.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Liu
authors.affiliation: Key Lab of Colloid and Interface Chemistry of Ministry, of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27, South Shanda Road, Jinan, 250100, P.R. China.
authors.forename: Fanjun
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Key Lab of Colloid and Interface Chemistry of Ministry, of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27, South Shanda Road, Jinan, 250100, P.R. China.
authors.forename: Ailing
authors.initials: A
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, Shantou University, Guangdong, 515063, P.R. China. qxtong@stu.edu.cn.
authors.forename: Qingxiao
authors.initials: Q
authors.lastname: Tong
authors.affiliation: Key Lab of Colloid and Interface Chemistry of Ministry, of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27, South Shanda Road, Jinan, 250100, P.R. China.
authors.forename: Chen-Ho
authors.initials: CH
authors.lastname: Tung
authors.affiliation: Key Lab of Colloid and Interface Chemistry of Ministry, of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27, South Shanda Road, Jinan, 250100, P.R. China. wwg@sdu.edu.cn.
authors.forename: Wenguang
authors.initials: W
authors.lastname: Wang
keywords: conformation analysis; electron transfer; hydrides; iron; ligand effects