Hexylene glycol Lewis Structure

Hexylene glycol Lewis Structure: C₆H₁₄O₂ Lewis Structure, tetrahedral Geometry, sp3 Hybridization & Polarity

Hexylene glycol Key Facts

The Hexylene glycol Lewis structure is C–C single bond and 3 C–H single bond; the central C has 4 electron domains (0 lone pairs), giving a tetrahedral electron-domain arrangement and a tetrahedral molecular geometry with a 109.5° bond angle. C is best described as sp3-hybridized, and Hexylene glycol is polar because the tetrahedral shape (and/or unequal terminal atoms) prevents cancellation of the bond dipoles.

Figure 1: Lewis Structure of Hexylene glycol (C₆H₁₄O₂)

Chemical Formula	C₆H₁₄O₂
CAS Number	107-41-5
Total Valence Electrons	50
Lewis Structure	C–C single bond and 3 C–H single bond
Electron-Domain Geometry	tetrahedral
Molecular Geometry	tetrahedral
Hybridization Model	sp3 (central C)
Bond Angle	109.5°
Polarity	Polar molecule

PubChem (CID 7870) and NIST list Hexylene glycol as C ₆H ₁₄O ₂ with CAS 107-41-5; molecular weight ≈ 118.17 g/mol. View CAS 107-41-5 dictionary details on Guidechem →

Applications of Hexylene glycol (CAS 107-41-5)

Alcohols are among the most important commodity solvents and intermediates. Methanol is a feedstock for formaldehyde and MTBE, ethanol for solvents, fuel blending and beverages, and isopropanol for disinfectants and electronics cleaning; longer-chain alcohols feed surfactant and ester manufacture.

Solvent Polar protic solvent for coatings, inks, extracts and cleaning.

Feedstock Building block for formaldehyde, esters, ethers and fuels.

Consumer & Industrial Disinfectants, cosmetics, antifreeze components and pharma.

Procurement Note "Hexylene glycol" is supplied in multiple commercial grades and package sizes. Specify purity, grade, moisture/impurity limits, package (cylinder, drum or bulk) and intended process, and use CAS 107-41-5 as the primary identifier when screening suppliers; always confirm regional availability and safety documentation (SDS).

Step 1 - Valence Electrons & Central Atom

To draw the Hexylene glycol Lewis structure we first count the total valence electrons. C₆H₁₄O₂ contains 6×4 (C) + 14×1 (H) + 2×6 (O); the net charge of 0 gives a total of 50 valence electrons to place.

The central atom is C. It is the least electronegative atom capable of forming multiple bonds and is surrounded by the more electronegative terminal atom(s); hydrogen, when present, always occupies a terminal position. Electronegativity considerations place the electron density toward the terminal atom(s).

Valence-electron count

Total valence electrons = 6×4 (C) + 14×1 (H) + 2×6 (O) = 50 electrons.

Step 2 - Lewis Structure & Electron Distribution

Place C at the center and connect each surrounding atom with a single bond, complete octets on the terminal atoms, and place any remaining electrons on the central atom. The resulting electron distribution is: C–C single bond and 3 C–H single bond; no lone pairs on C.

Counting bonding and nonbonding electrons around C therefore satisfies the octet/expanded-octet requirement for the drawn structure.

C–C C–H ×3

C: 0 lone pairs, 4 bonding domains

4 bonding domains + 0 lone pairs = 4 electron domains

Octet Rule: Why C Has Eight Electrons C forms 4 bond(s) and retains 0 nonbonding electron(s), reaching an octet. No expanded octet is required for this second-row (or octet-satisfying) central atom.

Step 3 - VSEPR Theory & Geometry

VSEPR theory states that the 4 electron domains around C arrange to minimize mutual repulsion, giving an tetrahedral electron-domain geometry.

Because 0 of these domains are lone pair(s) — and lone pairs repel more strongly than bonding pairs — the observed molecular geometry is tetrahedral; the C bond angle is set to 109.5° rather than the ideal value for the electron-domain geometry.

Repulsion hierarchy

A useful VSEPR approximation is: lone pair–lone pair repulsion > lone pair–bonding pair repulsion > bonding pair–bonding pair repulsion. With 0 lone pair(s) on C, the lone-pair domains occupy positions that minimize overall repulsion while pushing the bonding domains (and therefore the bonded atoms) closer together.

Hybridization & Formal Charge

In the conventional localized-bond model, C uses sp3 hybrid orbitals to form the 4 equivalent electron-domain directions (4 bonding + 0 lone pair).

Formal-charge check

Formal charge on central C = V − N − ½B = 4 − 0 − ½×8 = 3. The nonzero formal charge is distributed by resonance / charge separation; the drawn structure is the lowest-energy contributor.

Modeling Note Modeling Note: sp3 is a compact model for the 4 electron-domain directions around C; full quantum-chemical treatments use molecular orbitals.

Is Hexylene glycol Polar or Nonpolar?

Hexylene glycol is polar. The tetrahedral shape prevents cancellation of the bond dipoles. The bond dipoles do not cancel, leaving a net molecular dipole, which strongly influences solvation behavior and intermolecular interactions.

Expert Quote — Structural Chemistry Perspective

The decisive structural fact is not simply that the individual bonds are polar; it is whether molecular symmetry allows their vector sum to vanish. In Hexylene glycol the tetrahedral arrangement prevents cancellation, so a permanent dipole remains.

Interpretation consistent with standard VSEPR / molecular-geometry references.

This polarity profile underpins its behavior as a solvent, reactant or process intermediate; when sourcing, specify grade and container compatibility.

Structural Comparison Table

Species	Formula	Central Atom	Electron Domains	Molecular Geometry	Polarity
Hexylene glycol	C₆H₁₄O₂	C	4	tetrahedral	Polar
Carbon dioxide	CO₂	C	2	linear	Nonpolar
Carbon monoxide	CO	C	2	linear (diatomic)	Polar
Carbon disulfide	CS₂	C	2	linear	Nonpolar
Methane	CH₄	C	4	tetrahedral	Nonpolar
Ethane	C₂H₆	C	4	tetrahedral	Nonpolar

Practice question Starting from the 50 valence electrons of C₆H₁₄O₂, draw the Lewis structure and confirm the central C atom is sp3-hybridized with tetrahedral geometry. What happens to the bond angle if one terminal atom is replaced by a more electronegative substituent?

Looking for industrial bulk or specified-grade supplies of Hexylene glycol (CAS 107-41-5)? Browse Supplier on Guidechem →

FAQs

Is C₆H₁₄O₂ polar or nonpolar?

Hexylene glycol is polar. Its tetrahedral geometry (and/or unequal terminal atoms) stops the bond dipoles from cancelling.

What is the Lewis structure of Hexylene glycol?

C–C single bond and 3 C–H single bond; no lone pairs on C. It uses all 50 valence electrons and the preferred structure carries a formal charge of 3 on the central atom.

What is the bond angle in Hexylene glycol?

The C angle is about 109.5°. Lone-pair repulsion compresses the angle from the ideal tetrahedral value.

What is the hybridization of C in Hexylene glycol?

The conventional model is sp3. Hexylene glycol has 4 electron domains around the central C.

What is the CAS number of Hexylene glycol?

The CAS number is 107-41-5. PubChem (CID 7870) and NIST identify this with C₆H₁₄O₂; use it to locate suppliers and database records.

References

PubChem CID 7870, Hexylene glycol. Molecular formula, CAS number, molecular weight and chemical identity.
NIST Chemistry WebBook, SRD 69, Hexylene glycol. Formula, CAS Registry Number and thermochemical / spectroscopic data.
IUPAC Gold Book. Definitions for "lone pair", "VSEPR", "hybridization" and "formal charge".
Atkins, P. & de Paula, J., Physical Chemistry. VSEPR, molecular geometry and dipole moments.
Guidechem supplier & dictionary records. Commercial sourcing and CAS-linked property pages for Hexylene glycol (CAS 107-41-5).

Technical scope: Lewis structures, VSEPR and hybridization are model-based descriptions for chemical communication and structure prediction; actual molecular electronic structure is more accurately represented by molecular-orbital and quantum-chemical methods. Commercial grades vary substantially by supplier and intended use; CAS 107-41-5 identifies the substance, not a universal purity specification.

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Hexylene glycol Lewis Structure