Preparation and Structural Characterization of Polypeptide Complexes of Dimolybdenum(II). 1. A Tetrakis(glycylglycine) Complex

Avi Bino; F. Albert Cotton

doi:10.1021/ja00529a023

Preparation and Structural Characterization of Polypeptide Complexes of Dimolybdenum(II). 1. A Tetrakis(glycylglycine) Complex

Avi Bino, F. Albert Cotton^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The unique capacity of the Mo24+ cation to form complexes with polypeptide ligands in which only the carboxyl terminus is coordinated and the rest of the zwitterionic molecule is left conformationally free is described. This principle is then illustrated by the isolation and structural characterization of the [Mo2(glycylglycine)4]4+ ion in the form of the compound [Mo2(GG)4]Cl4'6H20. The structure has been solved and refined in space group l with Z= 1 by conventional methods using diffractometer data. The unit cell dimensions are a = 9.775 (2) A. 6 = 10.886 (2) Á,c = 9.495 (2) Á, a = 107.06 (2)°, ß = 113.15 (2)°, 7 = 91.07 (2)°, V = 877.8 (1) A3. Each of the two crystallographically independent glycylglycine ligands contains a central peptide linkage that conforms very closely to the generally accepted standard dimensions and planar trans conformation for peptide links.

Original language	English
Pages (from-to)	3014-3017
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	102
Issue number	9
DOIs	https://doi.org/10.1021/ja00529a023
State	Published - Apr 1980
Externally published	Yes

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title = "Preparation and Structural Characterization of Polypeptide Complexes of Dimolybdenum(II). 1. A Tetrakis(glycylglycine) Complex",

abstract = "The unique capacity of the Mo24+ cation to form complexes with polypeptide ligands in which only the carboxyl terminus is coordinated and the rest of the zwitterionic molecule is left conformationally free is described. This principle is then illustrated by the isolation and structural characterization of the [Mo2(glycylglycine)4]4+ ion in the form of the compound [Mo2(GG)4]Cl4'6H20. The structure has been solved and refined in space group l with Z= 1 by conventional methods using diffractometer data. The unit cell dimensions are a = 9.775 (2) A. 6 = 10.886 (2) {\'A},c = 9.495 (2) {\'A}, a = 107.06 (2)°, {\ss} = 113.15 (2)°, 7 = 91.07 (2)°, V = 877.8 (1) A3. Each of the two crystallographically independent glycylglycine ligands contains a central peptide linkage that conforms very closely to the generally accepted standard dimensions and planar trans conformation for peptide links.",

author = "Avi Bino and Cotton, {F. Albert}",

year = "1980",

month = apr,

doi = "10.1021/ja00529a023",

language = "אנגלית",

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pages = "3014--3017",

journal = "Journal of the American Chemical Society",

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publisher = "American Chemical Society",

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T1 - Preparation and Structural Characterization of Polypeptide Complexes of Dimolybdenum(II). 1. A Tetrakis(glycylglycine) Complex

AU - Bino, Avi

AU - Cotton, F. Albert

PY - 1980/4

Y1 - 1980/4

N2 - The unique capacity of the Mo24+ cation to form complexes with polypeptide ligands in which only the carboxyl terminus is coordinated and the rest of the zwitterionic molecule is left conformationally free is described. This principle is then illustrated by the isolation and structural characterization of the [Mo2(glycylglycine)4]4+ ion in the form of the compound [Mo2(GG)4]Cl4'6H20. The structure has been solved and refined in space group l with Z= 1 by conventional methods using diffractometer data. The unit cell dimensions are a = 9.775 (2) A. 6 = 10.886 (2) Á,c = 9.495 (2) Á, a = 107.06 (2)°, ß = 113.15 (2)°, 7 = 91.07 (2)°, V = 877.8 (1) A3. Each of the two crystallographically independent glycylglycine ligands contains a central peptide linkage that conforms very closely to the generally accepted standard dimensions and planar trans conformation for peptide links.

AB - The unique capacity of the Mo24+ cation to form complexes with polypeptide ligands in which only the carboxyl terminus is coordinated and the rest of the zwitterionic molecule is left conformationally free is described. This principle is then illustrated by the isolation and structural characterization of the [Mo2(glycylglycine)4]4+ ion in the form of the compound [Mo2(GG)4]Cl4'6H20. The structure has been solved and refined in space group l with Z= 1 by conventional methods using diffractometer data. The unit cell dimensions are a = 9.775 (2) A. 6 = 10.886 (2) Á,c = 9.495 (2) Á, a = 107.06 (2)°, ß = 113.15 (2)°, 7 = 91.07 (2)°, V = 877.8 (1) A3. Each of the two crystallographically independent glycylglycine ligands contains a central peptide linkage that conforms very closely to the generally accepted standard dimensions and planar trans conformation for peptide links.

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ER -

Preparation and Structural Characterization of Polypeptide Complexes of Dimolybdenum(II). 1. A Tetrakis(glycylglycine) Complex

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