Can mu(4)-alkyne and mu(3)-alkenyl ligands be considered as six- and five-electron donors, respectively?

Cabeza JA; Garcia-Alvarez P; Perez-Carreno E

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Can mu(4)-alkyne and mu(3)-alkenyl ligands be considered as six- and five-electron donors, respectively?

机译：mu（4）-炔和mu（3）-烯基配体能否分别视为六电子和五电子供体？

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EHMO calculations have revealed that alkynes bridging four metal atoms are four-electron-donor ligands and that alkenyl groups bridging three metal atoms are three-electron-donor ligands. Therefore, the answer to the title question is "no". The clusters that contain these ligands have large HOMO-LUMO gaps, despite being electronically unsaturated (according to the EAN rules). These are the conclusions of the present contribution, which tries to shed light on the hitherto existing controversy about the number of electrons that these ligands contribute to the metal clusters that hold them.

机译：EHMO计算表明，桥接四个金属原子的炔烃是四个电子给体配体，桥接三个金属原子的烯基是三个电子给体配体。因此，标题问题的答案为“否”。包含这些配体的簇尽管电子不饱和（根据EAN规则），但仍具有较大的HOMO-LUMO间隙。这些是本研究成果的结论，旨在阐明迄今为止有关这些配体对持有它们的金属簇的电子数量的现有争议。

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《Organometallics》 |2005年第8期|共4页
作者
Cabeza JA; Garcia-Alvarez P; Perez-Carreno E;
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正文语种 eng
中图分类有机化学;
关键词
ALKYNE LIGANDS; CRYSTAL-STRUCTURES; CARBONYL CLUSTERS; STRUCTURAL CHARACTERIZATIONS; TRIRUTHENIUM CLUSTERS; MOLECULAR-STRUCTURE; ALKENYL LIGANDS; COMPLEXES; REACTIVITY; ELECTROCHEMISTRY;

机译：炔烃;晶体结构;羰基团;结构特征;TRI类;分子结构;烯基酚;化合物;反应活性;电化学;

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1. Can mu(4)-alkyne and mu(3)-alkenyl ligands be considered as six- and five-electron donors, respectively? [J] . Cabeza JA, Garcia-Alvarez P, Perez-Carreno E Organometallics . 2005,第8期

机译：mu（4）-炔和mu（3）-烯基配体能否分别视为六电子和五电子供体？
2. Synthesis, Structural, and Theoretical Analysis of Ru_4(CO)_(12)(#mu#-PF_2)(#mu#_4-P): Is the #mu#_4-P Atom a Three-Electron or a Five-Electron Donor? [J] . Samia Kahlal, Weibin Wang, Ludmila Scoles, Organometallics . 2001,第22期

机译：Ru_4（CO）_（12）（＃mu＃-PF_2）（＃mu＃_4-P）的合成，结构和理论分析：＃mu＃_4-P原子是三电子还是五电子捐赠者？
3. Synthesis, structure, and property of a triruthenium cluster having a mu-alkyl ligand: Transformation of a mu(3)(perpendicular to)-alkyne ligand into a mu-alkyl ligand via a mu(3)-vinylidene complex [J] . Tenjimbayashi RI, Murotani E, Takemori T, Journal of Organometallic Chemistry . 2007,第26期

机译：具有mu-烷基配体的三钌簇的合成，结构和性质：通过mu（3）-亚乙烯基络合物将mu（3）（垂直于）炔配体转变为mu-烷基配体
4. Skeletal Rearrangement of a Triruthenium mu_3(perpendicular)-Alkyne Complex via the formation of a mu_3-Vinylidene Intermediate [C] . Ryu-ichi Tenjimbavashi, Toshiro Takao, Hiroharu Suzuki Symposium on Organometallic Chemistry . 2006

机译：通过形成MU_3-亚乙烯基中间体的Triruthenium mu_3（垂直） - 烷基复合物的骨骼重排
5. Syntheses and characterizations of monomeric molybdenum(VI) complexes with bidentate phosphine oxide ligands and dimeric and tetrameric molybdenum(V) clusters with benzoic acid and phosphinic acid derivatives, containing molybdenum oxide, molybdenum(2) dioxide (mu-oxygen) and molybdenum(4) tetroxide (mu3-oxygen) structural motifs [D] . Sreehari, Soumyashree 2010

机译：具有二齿膦氧化物配体的单体钼（VI）配合物以及具有苯甲酸和次膦酸衍生物的二聚和四聚钼（V）簇的合成和表征，其中包含氧化钼，二氧化钼（mu-oxygen）和钼（4））四氧化物（mu3-氧）结构基序
6. Ligand-Specific Regulation of the Endogenous Mu-Opioid Receptor by Chronic Treatment with Mu-Opioid Peptide Agonists [O] . Marianna Murányi, Resat Cinar, Orsolya Kékesi, 2006

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7. Triadic coupling between hydride, acetylide and alkyne on the complex WRe(eta-C5Me5)O(CO)(4)(mu-H)(CCPh). Crystal structures of complexes containing a substituted cyclopentadienylidene ligand or a folded metallacyclopentadienyl fragment [O] . Chi Y 2011

机译：氢化物，乙炔化物和炔烃在WRe（eta-C5Me5）O（CO）（4）（mu-H）（CCPh）上的三重偶联。含有取代的环戊二烯基配体或折叠的金属环戊二烯基片段的配合物的晶体结构
8. Chemistry of Polynuclear Metal Complexes with Bridging Carbene or Carbyne Ligands. Part 90. (1) Synthesis of the Complexes (W2M2(mu-CO)(mu-CMe)(mu3-CMe)-(Mu-PPh2)2(CO)3(eta-C5H5)2) (M = Rh or Ir) and Related Tetra- and Penta-nuclear Metal Compounds: Interconversion of Ketenyl and Lambda(5) -Phospha-alkyne Ligands Bridging Tungsten-Rhodium Bonds. [R] . Davies, S. J., Stone, F. G. 1989

机译：具有桥接卡宾或卡宾配体的多核金属配合物的化学。部分90.（1）配合物的合成（W2m2（mu-CO）（mu-Cme）（mu3-Cme） - （mu-pph2）2（CO）3（eta-C5H5）2）（m = Rh或Ir）和相关的四核和五核金属化合物：Ketenyl和Lambda（5）-phospha-alkyne配体桥联钨 - 铑键的相互转化。

Can mu(4)-alkyne and mu(3)-alkenyl ligands be considered as six- and five-electron donors, respectively?

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