Description

Undecagold CAS NO 67954-30-7 is a well-defined, atomically precise gold nanocluster consisting of a core of eleven gold atoms, often stabilized by phosphine and halide ligands. This compound matters as a critical nanoscale building block and model system for studying quantum size effects, catalysis, and the fundamental properties of metal clusters. It is essential for researchers and developers in nanomaterials science, catalysis, and advanced electronics who require monodisperse, structurally defined gold clusters.

Application

• Catalysis Research: Serves as a precise model catalyst for studying structure-activity relationships in reactions like selective hydrogenation and oxidation.
• Nanomaterial Synthesis: Acts as a seed or precursor for the controlled synthesis of larger, more complex gold nanoparticles and nanostructures.
• Quantum Dot & Optoelectronics: Used in fundamental studies of size-dependent optical and electronic properties for potential applications in sensors and photonic devices.
• Surface Science & Spectroscopy: Provides an ideal, uniform substrate for advanced spectroscopic techniques such as X-ray crystallography and mass spectrometry to understand cluster geometry and bonding.
• Bioconjugation & Labeling: Potential use in creating ultra-small, stable gold labels for electron microscopy or biomedical imaging probes due to its small, defined size.
• Academic & Industrial R&D: A fundamental material for universities and corporate R&D labs exploring the next generation of nanotechnology and advanced materials.

Basic Information

Product Name	Undecagold
CAS No.	67954-30-7
Molecular Formula	Typically Au11LnXm (L = phosphine ligand, X = halide)
Molecular Weight	Contact for details (varies by specific ligand composition)
Synonyms	Gold Undecamer; Au11 Cluster; Undecagold Cluster; [Au11(PPh3)8X3] (X = Cl, Br, I, CN, SCN); Eleven-Atom Gold Cluster; Atomically Precise Gold Nanocluster; Au11 Nanocluster
EINECS	Contact for details

Quality Control

Our Undecagold is produced and handled under controlled conditions to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical characterization to confirm cluster integrity and composition. A comprehensive Certificate of Analysis (COA) is provided, detailing specifications from identification to purity. We support research and development with reliable, high-quality materials that meet the exacting standards required for advanced nanotechnology applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C) under an inert atmosphere (e.g., argon or nitrogen) to prevent oxidation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark solid (color may vary with ligands)
Identification (IR / NMR / MS)	Conforms to structure
Assay (Au content)	≥ 95% (by ICP-OES)
Ligand Content	As specified per grade
Solubility	Soluble in common organic solvents (e.g., CH2Cl2, THF)
Particle Size (Core Diameter)	~0.8 nm (by STEM/X-ray)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.