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SCL2 VSEPR: Electron Count, VSEPR Notation, Shape and Polarity

VSEPR and Lewis-structure reference for SCL2 VSEPR: 4 electron domains around the sulfur, bent (v-shaped) geometry (AX2E2), bond angle ~103° (Cl-S-Cl), sp3 hybridisation and the most common drawing mistake. CAS 10545-99-0. Abernathy2 MIN READOctober 27, 2026

Molecular Geometry & Lewis Structures

Sulfur Dichloride (SCl2): Lewis Structure, VSEPR Geometry and Bond Angles

Electron-domain analysis, geometry, bond angle and step-by-step construction for SCl2 (CAS 10545-99-0) — with the practical supply context B2B and laboratory buyers need.

Sulfur dichloride (SCl2) comparison

What Shape Does SCl2 Have?

SCl2 has a Bent (V-shaped) molecular geometry (AX2E2, tetrahedral) with a bond angle of ≈103° (Cl–S–Cl). The central sulfur carries 2 bonding domain(s) and 2 lone pair(s) — 4 electron domains in total. The larger central atom places the angle between h2s's near-90° and water's 104.5°.

Hybridisation is conventionally described as sp3 (conventional description). Polarity: Polar.

1. Molecular Identity and Key Parameters

Parameter Sulfur Dichloride (SCl2)
CAS Registry Number 10545-99-0
Molecular formula SCl2
Molar mass 102.97 g/mol
Total valence electrons 20
Central atom Sulfur
Bonding domains (σ) 2
Lone pairs on central atom 2
Electron domains (steric number) 4
Electron-pair geometry Tetrahedral
Molecular geometry (shape) Bent (V-shaped)
VSEPR notation AX2E2
Bond angle ≈103° (Cl–S–Cl)
Hybridisation (conventional) sp3 (conventional description)
Polarity Polar.
Lewis structure guide SCl2 Lewis structure

Molar mass is the average value rounded for procurement use. Hybridisation labels are the conventional VSEPR-level description; orbital treatment becomes more nuanced at higher levels of theory.

2. Drawing the Lewis Structure of SCl2, Step by Step

  1. Count valence electrons: 6 (S) + 2×7 (Cl) = 20 — a total of 20 electrons (10 pairs) must be placed.
  2. Build the skeleton: place the sulfur at the centre and attach the terminal atoms with single bonds; hydrogen is never a central atom. Each single bond consumes 2 electrons.
  3. Complete terminal octets: distribute the remaining electrons as lone pairs on the terminal atoms first (hydrogens already carry their duet from the single bond).
  4. Satisfy the central atom: Two S–Cl single bonds plus two lone pairs on sulfur.
  5. Verify: Octet satisfied on sulfur. Apply the standard formal-charge check (valence − nonbonding − half of bonding electrons) to confirm the drawn form.

A worked diagram of this molecule is kept in the companion guide: SCl2 Lewis structure.

3. VSEPR Analysis: Why SCl2 Is bent (v-shaped)

VSEPR theory counts electron domains — every σ bond counts once regardless of bond order, and every lone pair counts once. SCl2 has 4 such domains around the sulfur: 2 bonding and 2 lone. 4 domains correspond to a tetrahedral electron-domain arrangement; with 2 lone pairs excluded from the shape the observed molecular shape is bent (v-shaped) (AX2E2).

Bond angle: ≈103° (Cl–S–Cl) because the larger central atom places the angle between H2S's near-90° and water's 104.5°.

Polarity: Polar.

Geometry shortcut for recall

Steric number 4 → parent arrangement tetrahedral; subtract 2 lone positions and the visible shape is bent (v-shaped). Same electron count, different lone-pair bookkeeping, different geometry — always count the domains before naming the shape.

4. The Most Common Mistake When Drawing SCl2

Treating the bottle as a single pure compound — liquid SCl2/S2Cl2 equilibria are composition- and temperature-dependent, a real procurement trap.

Octet satisfied on sulfur.

5. Why the Geometry Matters in Practice

Intermediate in polysulfide and thiuram vulcanisation-agent manufacture; commercial material sits in equilibrium with S2Cl2 and chlorine, so the active-chlorine assay on the COA defines what you actually bought.

Structure-level identity is exactly what a purchase order has to fix: the same molecular formula can hide isomers, hydrates or salt forms with different handling profiles. Before ordering, match CAS (10545-99-0), assay, water content and container rating against the datasheet, and request the COA batch that will ship.

Compare Sulfur Dichloride (SCl2) supply offers →

6. Quick FAQs on SCl2

What is the molecular geometry of SCl2?

Bent (V-shaped). The 4 electron domains around the central sulfur adopt a tetrahedral arrangement, and with 2 lone pairs in place the visible shape is bent (v-shaped).

What is the bond angle in SCl2?

≈103° (Cl–S–Cl), because the larger central atom places the angle between H2S's near-90° and water's 104.5°.

Is SCl2 polar or nonpolar?

Polar.

How many lone pairs does SCl2 have?

SCl2 carries 2 lone pairs on the central sulfur.

7. References

  1. IUPAC / Gillespie, Assessment of the VSEPR model. Basis of AXE notation and lone-pair ordering. VSEPR entry
  2. PubChem compound record for Sulfur Dichloride (SCl2). Registry number, formula and computed descriptors. PubChem 10545-99-0
  3. Companion Lewis-structure guide on this site. Worked diagram for SCl2. Lewis structure SCl2

Editorial note

This page explains molecular geometry and Lewis-structure construction for education and procurement due-diligence. It is not a safety datasheet; for handling, exposure and transport limits consult the current SDS and local regulations.

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