obtained. Clusters 2a and 2b were isostructural, and each consisted of an octahedral E2Mn3Cr core, in which each Mn–Mn or Mn–Cr bond of the Mn3Cr plane was semibridged by one carbonyl ligand. Clusters 1a and 1b (with [TMBA] salts) underwent metal core closure to form octahedral clusters 2a and 2b upon treatment with KOH/MeOH at 60 °C. In addition, 1a and 1b were found to undergo cluster expansion to form
当三角双锥团簇[P
PN] [E 2 Mn 3(CO)9 ](E = S,Se)用Cr(CO)6和P
PNCl摩尔比为1:1:2或1:1处理时2:2在4 M KOH / MeCN / MeOH溶液中,掺有单Cr(CO)5的HE 2 Mn 3-络合物[P
PN] 2 [HE 2 Mn 3 Cr(CO)14 ](E = S,[P
PN分别形成] 2 [ 1a ]; Se,[P
PN] 2 [ 1b ])。X射线晶体学分析表明1a和1b是同构的,每个都显示E2个Mn 3方形
金字塔形核,两个基础E原子之一与一个Cr(CO)5基团外部配位,一个Mn-Mn键被一个氢原子桥接。但是,当将[E 2 Mn 3(CO)9 ] -的
TMBA +盐与Cr(CO)6以1:1的摩尔比在4 M KOH / MeOH溶液中混合并在60°C回流时, -Cr(CO)3-结合的E 2 Mn 3 Cr八面体簇[
TMBA] 3 [E 2 Mn