...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Phosphoraneiminato Complexes of Rare-Earth Elements. Crystal Structures of [Yb_2Cp_3(NPPh_3)_3], [YCp(NPPh_3)(#mu#-OSiMe_2NPPh_3)]_2, and [M(NPPh_3)_2(#mu#-OSiMe_2NPPh_3)]_2 with M = Y and Sm
【24h】

Phosphoraneiminato Complexes of Rare-Earth Elements. Crystal Structures of [Yb_2Cp_3(NPPh_3)_3], [YCp(NPPh_3)(#mu#-OSiMe_2NPPh_3)]_2, and [M(NPPh_3)_2(#mu#-OSiMe_2NPPh_3)]_2 with M = Y and Sm

机译：稀土元素的Phosphoraneiminato配合物。 [Yb_2Cp_3（NPPh_3）_3]，[YCp（NPPh_3）（＃mu＃-OSiMe_2NPPh_3）] _ 2和[M（NPPh_3）_2（＃mu＃-OSiMe_2NPPh_3）] _ 2的晶体结构，其中M = Y和Sm

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The ytterbium complex [Yb_2Cp_3(NPPh_3)_3] with sesqui distribution of cyclopentadienide and phosphoraneiminato ligands is made from YbCP_2Cl and LiNPPh_3 in boiling toluene and isolated as yellow, moisture sensitive crystals, which enclose three molecules of toluene per unit cell. [Yb_2Cp_3(NPPh_3)_3] centre dot 3 C_7H_8 (1): Space group Pbca, Z = 8, lattice dimensions at -80 deg C: a = 2727.6(2), b = 1977.5(1), c = 2848.9(2) pm; R = 0.0541. Two of the (NPPh_3)~- -groups link the ytterbium atoms to a nonplanar Yb_2N_2 four-membered ring with a folding angle of 17.1 deg along the Yb...Yb connecting line. The third (NPPh_3)~- group is terminally bonded with a short Yb-N distance of 214.2 pm. [YCp(NPPh_3)(#mu#-OSiMe_2NPPh_3)]_2 centre dot 4 C_7H_8 (2) originates from YCpCl_2 and LiNPPh_3 in boiling toluene with Baysilonpaste participating forming colourless, moisture sensitive crystals. Space group P2_1/c, Z = 2, lattice dimensions at -80 deg C: a = 1469.0(1), b = 1234.1(1), c = 2761.5(2) pm, #beta# = 93.196(10) deg; R = 0.0518. In 2 the yttrium atoms are linked via the oxygen atoms of the (OSiMe_2NPPh_3)~- groups to form a centrosymmetric Y_2O_2 four-membered ring with Y-O bonds of different lengths. Together with the terminally bonded (NPPh_3)~- -ligand, the #eta#~5-C_5H_5~- group, and the N atom of the siloxyphosphaneimine group, which functions as a donor atom, the Y atoms achieve coordination number five. [Y(NPPh_3)_2(#mu#-OSiMe_2NPPh_3)]_2 centre dot 2 C_7H_8 (3) and [Sm(NPPh_3)_2(#mu#-OSiMe_2NPPh_3)]_2 (4) originate from the metal trichlorides with KNPPh_3 in THF with Baysilon paste participating and subsequent crystallization from toluene as colourless, moisture sensitive crystal needles. 3: Space group P2_1, Z = 2, lattice dimensions at -80 deg C: a = 1804.1(2), b = 1401.8(1), c = 2221.6(2) pm, #beta# = 98.716(9) deg, R = 0.0537. 4: Space group P1, Z = 1, lattice dimensions at -80 deg C: a = 1363.4(1), b = 1364.9(1), c = 1650.6(1) pm; #alpha# = 112.457(8) deg, #beta# = 91.948(9) deg, #gamma# = 114.974(8) deg; R = 0.0308. 3 and 4 form centrosymmetric dimeric molecules in which the metal atoms are linked via the oxygen atoms of the (OSiMe_2NPPh_3)~- groups to form M_2O_2 four-membered rings with M-O bonds of varying length. Together with the terminally bonded (NPPh_3)~- ligands and the N atom of the siloxyphosphaneimine ligand, which function as a donor atom, the metal atoms achieve coordination number five.
机译：配合物[Yb_2Cp_3（NPPh_3）_3]呈环状分布，由YbCP_2Cl和LiNPPh_3在沸腾的甲苯中制得，呈黄色，对水分敏感的晶体，每单位晶胞内含三个甲苯分子，with杂物呈环状分布。 [Yb_2Cp_3（NPPh_3）_3]中心点3 C_7H_8（1）：空间群Pbca，Z = 8，-80℃时的晶格尺寸：a = 2727.6（2），b = 1977.5（1），c = 2848.9（2） ）pm; R ＝ 0.0541。 （NPPh_3）〜-基团中的两个基团将atoms原子连接到非平面的Yb_2N_2四元环上，沿着Yb ... Yb连接线的折叠角为17.1度。第三个（NPPh_3）〜-基团以214.2 pm的短Yb-N距离末端键合。 [YCp（NPPh_3）（＃mu＃-OSiMe_2NPPh_3）] _ 2中心点4 C_7H_8（2）源自沸腾甲苯中的YCpCl_2和LiNPPh_3，Baysilonpaste参与形成无色，对湿气敏感的晶体。空间群P2_1 / c，Z = 2，在-80摄氏度下的晶格尺寸：a = 1469.0（1），b = 1234.1（1），c = 2761.5（2）pm，＃beta＃= 93.196（10）deg; R = 0.0518。在2中，钇原子通过（OSiMe_2NPPh_3）〜-的氧原子连接形成具有不同长度的Y-O键的中心对称Y_2O_2四元环。 Y端基与末端键合的（NPPh_3）-配体，＃eta＃〜5-C_5H_5〜-基团以及作为给体原子的甲硅烷氧基膦亚胺基团的N原子一起，达到5的配位数。 [Y（NPPh_3）_2（＃mu＃-OSiMe_2NPPh_3）] _ 2中心点2 C_7H_8（3）和[Sm（NPPh_3）_2（＃mu＃-OSiMe_2NPPh_3）] _ 2（4）源自四氯化碳中的KNPPh_3金属三氯化物加入Baysilon糊状物，然后从甲苯中结晶，成为无色，对湿气敏感的晶体针。 3：空间组P2_1 / n，Z = 2，在-80摄氏度下的晶格尺寸：a = 1804.1（2），b = 1401.8（1），c = 2221.6（2）pm，＃beta＃= 98.716（9）度，R ＝ 0.0537。 4：空间群P1，Z = 1，-80摄氏度时的晶格尺寸：a = 1363.4（1），b = 1364.9（1），c = 1650.6（1）pm; ＃alpha＃= 112.457（8）度，＃beta＃= 91.948（9）度，＃gamma＃= 114.974（8）度; R ＝ 0.0308。 3和4形成中心对称二聚体分子，其中金属原子通过（OSiMe_2NPPh_3）-基团的氧原子连接以形成具有不同长度的M-O键的M_2O_2四元环。金属原子与末端键合的（NPPh_3）〜-配体和甲硅烷氧基膦亚胺配体的N原子（起供体原子的作用）一起达到配位数5。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号