Synthesis and stereochemical analysis of the cubane-like Fe4(CO)12(μ3-S)4 and Fe4(CO)12(μ3-Se)4 tetramers: conversion of the tetrametal-bonding Fe4X4 cores in Fe4(NO)4(μ3-X)4 (where X - S, Se) into tetrametal-nonbonding cores by substitution of carbonyl for nitrosyl ligands

Abstract
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